Animal Behaviour 85 (2013) 305e312 Contents lists available at SciVerse ScienceDirect Animal Behaviour journal homepage: www.elsevier.com/locate/anbehav Essay Eighteen reasons animal behaviourists avoid involvement in conservation Tim Caro a, *, Paul W. Sherman b,1 a b Department of Wildlife, Fish and Conservation Biology and Center for Population Biology, University of California, Davis, CA, U.S.A. Department of Neurobiology and Behavior, Cornell University, Ithaca, NY, U.S.A. a r t i c l e i n f o Article history: Received 2 September 2012 Initial acceptance 5 October 2012 Final acceptance 6 November 2012 Available online 13 December 2012 MS. number: AE-12-00665 Keywords: animal behaviour behavioural ecology conservation biology management We summarize 18 common misgivings that animal behaviourists raise about becoming involved in conservation. We argue that many of the supposed institutional and interdisciplinary differences break down under scrutiny; that the supposed basic-applied dichotomy is often imaginary or insufficient to prevent interchange of ideas between behaviour and conservation; and that arguments about professional lifestyle, scientific inflexibility and despair are not adequate justifications for remaining on the sidelines. We suggest that many studies of animal behaviour are relevant to solving conservation problems, and we therefore encourage behaviourists to contribute more strongly to finding practical solutions to the contemporary conservation crisis. Ó 2012 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved. Despite almost two decades of discussions of the role that animal behaviour might play in conservation biology (Clemmons & Buchholz 1997; Caro 1998; Gosling & Sutherland 2000; FestaBianchet & Apollonio 2003), and recent syntheses of its potential contributions to conservation solutions (Buchholz 2007; Blumstein & Fernández-Juricic 2010; Candolin & Wong 2012), there is still reticence about applying concepts and methods of animal behaviour to solving conservation problems. Although attempts to relate the behaviour of animals to conservation are increasing in the academic literature (e.g. Slabbekoorn & den Boer-Visser 2006; Husby et al. 2009; Dolenec et al. 2011), and have reached the stage of literature reviews (e.g. Brown 2012; Møller 2012; Rosenthal & Stuart-Fox 2012), animal behaviour studies have generally failed to penetrate conservation biology or wildlife management practice and vice versa (Caro 2007; Angeloni et al. 2008). Lack of the anticipated cross-fertilization between animal behaviour and conservation biology surprises and concerns us. Recently, we challenged behavioural ecologists to help stem human-imposed losses of species and habitats (Caro & Sherman 2011a). We argued that such losses adversely affect not only researchers’ own study organisms but also their academic discipline itself, obfuscating, for example, such fundamental approaches as quantifying fitness, use of comparative methods and * Correspondence: T. Caro, Department of Wildlife, Fish and Conservation Biology and Center for Population Biology, University of California, Davis, CA 95616, U.S.A. E-mail address: [email protected] (T. Caro). 1 E-mail address: [email protected] (P. W. Sherman). interpretation of adaptations. The field of animal behaviour will also suffer if unique behaviours of populations of extant species continue to disappear due to anthropogenic changes (Caro & Sherman 2012). Most animal behaviourists are aware of these developments, some acutely, others only vaguely, but they are not sure how to contribute to solving them. When challenged to help provide conservation or management solutions, they often appear perplexed about how to proceed, and they raise a number of specific impediments that concern them. In this Essay, we will pose, and address, the toughest of these concerns. We have personally heard colleagues and students voice every one of them to justify staying on the sidelines. We hope that honest evaluations of these arguments will encourage readers of Animal Behaviour to become more involved in conservation. MAJOR IMPEDIMENTS Academic Issues (1) ‘My university does not reward applied biology’ This comment might have been valid two decades ago, but today most academic institutions (especially land grant colleges) have specific faculty positions in conservation biology or environmental science, as well as in animal behaviour. Many institutions have entire departments of applied biology centred on wildlife and conservation (North America) and natural resources and population management (Europe), and there are a good number of 0003-3472/$38.00 Ó 2012 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved. http://dx.doi.org/10.1016/j.anbehav.2012.11.007 306 T. Caro, P. W. Sherman / Animal Behaviour 85 (2013) 305e312 endowed chairs in conservation biology. Moreover, there is now a list of faculty who are willing to mentor students in conservation behaviour (http://animalbehaviorsociety.org:8786/Committees/ ABSConservation/Mentor). Given the current conservation crisis and society’s concern about it, we can expect to see more undergraduate and graduate courses and endowments for chairs in areas such as conservation science, sustainability, climate change biology and biodiversity. With donors’ willingness to contribute rising, grant funds from nongovernmental organizations (NGOs) and government funding bodies increasing, and students’ interest in classes and research opportunities soaring, university administrators will undoubtedly seize opportunities and put more of their own resources into conservation science. Conservationist Award that recognizes students pursuing conservation behaviour. Conservation biologists are regularly elected to National Academies of Sciences and Royal Societies, and they win prestigious international awards (e.g. the Crafoord Prize, Tyler Prize for Environmental Achievement, World Wildlife Fund Gold Medal). Society at large recognizes the crucial role of conservation in the 21st Century, as evidenced by media attention, monetary donations and volunteer efforts. Note that no comparable private contributions of time, energy and money go to animal behaviour. The prestige of conservation biology outside academe is bound to influence outdated perceptions within ivory towers. (2) ‘There is no targeted funding for studies in animal behaviour or behavioural ecology that apply to conservation issues’ Unfortunately, this is partially true: it is difficult to secure largescale funding from government research councils to support doctoral students or relieve faculty from teaching obligations. However, there are many smaller grant sources (see http:// animalbehaviorsociety.org:8786/Committees/ABSConservation/ABS ConservationFunding). Moreover, many of the species that animal behaviourists commonly study provide conservation services, for example, as pollinators (Greenleaf & Kremen 2006) or as indicators of pollution or spread of fungal diseases (Fisher et al. 2012), and animal behaviourists’ field sites are sometimes in threatened habitats. Therefore, animal behaviourists who incorporate conservation into their research can actually expand their funding horizons by seeking new sources (e.g. see http://www. conservationleadershipprogramme.org/), different federal granting agencies (e.g. Departments of Defense and Agriculture, Environmental Protection Agency, U.S. Geological Survey), NGOs or private donors. (4) ‘Professional wildlife managers deal with practical problems; they won’t listen to me’ There also is some truth to this assertion. Federal and state biologists and managers, especially the older generation, often distrust the advice of academic biologists. There are many reasons, prominent among which are that academics have rarely stepped forward to help them solve practical problems. Also, managers and academics do not often get to know each other personally or professionally: they rarely attend the same conferences and meetings, and they read different technical literature (Blumstein & Fernández-Juricic 2010). But things are gradually changing. Nowadays managers of captive breeding programmes recognize the importance of behavioural training before releasing animals (e.g. how to forage and avoid predators); managers of lands with endangered species acknowledge that they need to know about all aspects of their subjects’ biology, including physiological, behavioural and social requirements; zoo keepers understand that behavioural enrichment can be key to breeding success; and reserve designers realize that knowledge of variations in dispersal and migration can be used to predict how close habitat patches must be in order to support viable populations, as well as biogeographical range shifts under climate change (Kokko & Lopez-Sepulcre 2006). Even hunters and commercial fishermen understand that knowledge of social structure, breeding behaviour and population trajectories of wild game is essential for ensuring long-term sustainability. And all the large NGOs, which have a disproportionate say in conservation decision making, have a group of biologists in charge of strategic planning units. Yes, communication barriers remain, but they are eroding in the most influential conservation decision-making arenas. (3) ‘The academic establishment thinks conservation biology is less prestigious than animal behaviour’ Snobbery rears its ugly head. For many academics, basic and theoretical fields of inquiry do have higher status than applied and empirical fields. Some older members of the academic community may feel that animal behaviour is a more prestigious biological subdiscipline than conservation biology. These elders (>55 years old) were born when the world’s population was around 2 billion, and for them overpopulation and anthropogenic change are relatively new phenomena. They also are the people who were looked down upon early in their careers by, for example, physiologists, geneticists and functional morphologists, who regarded the new field of ethology as a ‘soft’ science, lacking in theory and experimental rigour. But younger colleagues see things differently. They were born into a world containing 5 or more billion people, and have spent their entire lives hearing about and dealing with global changes caused by anthropogenic forces. They are unlikely to accord greater prestige to a colleague working on game-theoretic models of animal behaviour than to one studying, say, how crowding affects disease transmission, climate change affects mammalian community structure, or how herbicides affect amphibian reproduction. Perceptions of the importance of conservation biology are changing too. Today there are numerous conservation-related societies, and they have large memberships. For example, the Society for Conservation Biology has approximately 4000 current members; by contrast, the Animal Behavior Society has about 2000 members and the Association for the Study of Animal Behaviour has about 1100 members. That the Animal Behavior Society values conservation-related research is evidenced by its online publication, The Conservation Behaviorist, and the E.O. Wilson Conservation Issues (5) ‘Conservation is mainly the province of state and federal agencies and NGOs; university people like me are peripheral’ Management actions have traditionally been conducted by government agencies and NGOs, but academic wildlife and fisheries biologists have always been involved in management decision making (especially regarding game species and their habitats). Contemporary management increasingly involves species of conservation interest or invasive species and, as a result, university personnel are becoming engaged at more levels. For example, they have conducted targeted research and advised government decision makers on effects of badger, Meles meles, culling on the spread of bovine tuberculosis in the U.K. (Donnelly et al. 2006) and on sizes of lion, Panthera leo, and leopard, Panthera pardus, hunting quotas in Tanzania (Packer et al. 2011). University personnel also conduct research in concert with NGOs and governments at local, national and global scales, as exemplified, respectively, by listing of the California tiger salamander, Ambystoma californiense (Stokstad 2004), in the Wildlife Conservation Society’s Report on corridors to the government of Tanzania (Jones et al. 2009), and in the Royal Society Policy Centre Report (2012), the ‘People and the planet’, T. Caro, P. W. Sherman / Animal Behaviour 85 (2013) 305e312 which coincided with the United Nations Conference on Sustainable Development in Rio de Janeiro (Rio 20þ) in June 2012. Although it is unusual for university personnel to play a leading role in conservation planning, they often provide crucial information at various stages; for example, academics in Australia and South Africa have been powerful voices in regional conservation planning (Pressey et al. 2007). Moreover, the barriers between agencies and universities are falling. U.S. Fish and Wildlife Cooperative Research Units are located on university campuses in many states, and the senior research staff members (all government employees) are typically accorded the responsibilities and privileges of faculty members. Furthermore, some prominent biologists have moved back and forth seamlessly between university and agency positions (e.g. Joel Berger, Sylvia Earle, John Emlen, John Holdren, Peter Kareiva, Jane Lubcheno, Gary Meffe and Reed Noss). Disciplinary Differences (6) ‘I study variations in behaviour among individuals, but conservation biologists are more concerned with saving populations, communities and ecosystems’ There is a fundamental difference between animal behaviour, which focuses on basic research questions, and conservation biology, which is an applied discipline. Typically, conservation biologists are not steeped in studying causal mechanisms or evolutionary theory, and animal behaviourists rarely attempt to explore how the behaviours that interest them affect population trajectories. Conceptually, however, the links between individual decision making and group- or population-level processes are firmly in place (Sutherland 1996; Kokko & Lopez-Sepulcre 2007; Safran et al. 2007; Berger-Tal et al. 2011; Rankin et al. 2007), and it is well recognized that individuals’ behaviours can have important demographic and population consequences for free-living (e.g. Eadie et al. 1998; Whitman et al. 2004) and introduced (e.g. Shier 2006; Moseby et al. 2012) populations. Behaviour plays an essential role in determining an organism’s survival and reproductive success because it modulates interactions between individuals and their environment and, by extension, the growth and persistence of natural populations (Charmantier et al. 2008; Schmitz et al. 2008). Behavioural variation is increasingly recognized as important in predicting invasion success and its consequences. For example, invasive cane toads, Rhinella marina, increase their dispersal rates along invasion fronts in Australia (Phillips et al. 2008), and death adders, Acanthophis praelongus, show variable predatory responses to cane toads when they are first encountered. This enables some adders to survive their new prey’s toxicity, making invasive toads less of a population problem for adders than was at first envisaged (Hagman et al. 2009). Basic studies of animal behaviour thus provide information that can potentially be useful in evaluating and addressing conservation problems. Moreover, knowledge of the physiological mechanisms underlying individuals’ behaviours can alert conservation managers to the likelihood of population declines in response to specific environmental changes, and can suggest ways to stem the declines (Carey 2005). The supposed chasm between animal behaviour and conservation biology often boils down to a communication problem: how to get conservationists to articulate their problems directly to behaviourists and how to encourage behaviourists to apply their expertise to thinking about practical problems and recommending solutions. (7) ‘I study the physiological mechanisms and fitness effects of behaviours, but conservation biologists are not interested in these things’ Natural selection does not act directly on group or population characteristics, but on individual morphologies, physiological 307 responses and behavioural strategies; group and population characteristics emerge as by-products of individuals adopting their best strategies given their socio-ecological context (LopezSepulchre & Kokko 2012). An unseen and therefore largely unappreciated aspect of behaviour is the decision-making rules (Darwinian algorithms) that organisms rely on to process information from their environment (Schlaepfer et al. 2010). Decisionmaking rules that evolve and persist are those that yield the greatest fitness benefits and the least fitness costs (Schlaepfer et al. 2002). Understanding the evolutionary trade-offs that have shaped these decision-making rules is not only interesting to behavioural biologists, it is also important to conservation biologists for predicting whether the behaviours of organisms will be adaptive, and thus whether their populations will persist, in a rapidly changing world (Both & Visser 2001). Consider a decision-making rule with an important contribution to individual fitness: right after hatching, young green sea turtles, Chelonia mydas, must disperse towards the safety of the ocean to avoid predation. How do hatchlings decide which direction to go? Natural selection favours reliance on environmental cues that, over time, have correlated with positive fitness outcomes. Thus, these turtles rely on the downward slope of the beach and the star-lit horizon to orient (Mrosovsky & Carr 1967). In environments that have experienced recent anthropogenic changes, evolved decision-making rules do not necessarily result in adaptive outcomes. On beaches with human housing developments electric lights can lure turtle hatchlings inland, where they perish (Longcore & Rich 2004). This is an example of an evolutionary trap (Schlaepfer et al. 2002) because although the appropriate option remains available (going towards the ocean), the young turtles’ formerly adaptive decision-making rule now orients them inland, in other words, it causes them to behave maladaptively in the altered environment. Evolutionary traps can threaten populations and species as a result of widespread reductions in survival and reproduction (Battin 2004; Robertson & Hutto 2006). The unprecedented rate at which humans are altering the world’s habitats, climate, nutrient cycles and plant and animal distributions (Vitousek et al. 1997; Palumbi 2001) has the potential to destroy the adaptive value of organisms’ behavioural decision-making rules in many contexts. Moreover, the type of anthropogenic change can alter the consequences of evolutionary traps: traps arising from degradation of existing habitats are more likely to facilitate extinction than traps arising from the addition of a novel habitat feature (Fletcher et al. 2012). Thus, by studying the circumstances in which evolutionary traps can arise, how organisms respond to them, and how to mitigate their effects, animal behaviourists can help address important conservation questions (Sih et al. 2011). FEIGNED IGNORANCE Academic Issues (8) ‘I earned my Ph.D. in animal behaviour; I don’t know anything about conservation or wildlife biology’ Anyone who studies behaviours of free-living organisms has valuable knowledge of the ecological and social pressures that act on them. Therefore, behaviourists understand some fundamental issues in wildlife biology. Consider a sexually selected trait shaped by female choice. Its exaggeration may be limited by predation pressure that itself may be affected by anthropogenic change. Or consider territorial establishment, the timing of which may be affected by global warming. Or a cryptic coloration pattern, the efficacy of which may be affected by aerosol pollution on 308 T. Caro, P. W. Sherman / Animal Behaviour 85 (2013) 305e312 background leaves and lichens. It is a short step from investigating a problem in animal behaviour to being sensitive to ecological changes: behavioural biologists are in a strong position to comprehend how changing ecological factors alter the systems on which they work. Indeed, field behaviourists may be the best positioned wildlife biologists (see Clark et al. 2010; Coulon et al. 2010). Fifty years ago, the academic biologists with intimate, comparative knowledge of organisms and habitats often were museum-based systematists (McCallum & McCallum 2006). The ascendance of molecular biology has resulted in museums hiring molecular systematists to fill positions formerly held by the taxonomists who were knowledgeable about particular phylogenetic groups, their distributions, life cycles and behaviours. As a result, museum-based comparative natural history studies have dwindled (Shaffer et al. 1998). Today, field behaviourists are filling this lacuna. To produce competitive research, they have to know their study organisms and habitats, and those of related species (i.e. they must be good natural historians; Bury 2006). Indeed, many animal behaviourists offer field courses and workshops on natural history. They also can provide informed advice about the needs and threats to their study organisms, and thus how to protect and preserve them (Sih et al. 2010a). (9) ‘I am an evolutionary behaviourist, and I don’t see the relevance of evolution to conservation’ Evolutionary biology plays an important role in conservation (Ashley et al. 2003; Root & Hughes 2005; Mace & Purvis 2008). The relative importance of dispersal, phenotypic plasticity and evolutionary (genetic) change in response to environmental variations are topics of keen theoretical interest (Davis et al. 2005; Lande 2009; Chevin et al. 2010), and, empirically, scientists are documenting behavioural, phenological and morphological evolutionary responses to exploitation (Coltman et al. 2003), urbanization (Møller 2008) and climate change (Møller 2011). Although climate change will curtail or obfuscate certain types of behavioural studies (Caro & Sherman 2011b), some researchers now suggest that anthropogenic change provides new opportunities to derive and test theoretical predictions about adaptations and constraints (Schroeder et al. 2011; Sih et al. 2011). Applying Darwinian thinking to addressing issues of species conservation and management represents a rapidly growing new subdiscipline within animal behaviour (Linklater 2004; Candolin & Wong 2012). Moreover, certain sexually selected traits (e.g. mate choice and infanticide), reproductive strategies (e.g. intra- and interspecific nest parasitism), aspects of sexual conflict (e.g. females delaying reproduction), siblicide and habitat choices (see Westneat & Fox 2010) all have potential and sometimes realized population consequences (Caro 1998). Evolutionary systematists also can supply important information. Many in situ conservation strategies centre on identifying and then trying to protect areas of high species richness (e.g. Bass et al. 2010 for a recent example), so there is a need to identify species accurately and establish their evolutionary relationships. Some conservation decisions are based on evolutionary uniqueness of populations. Moreover, legal statutes, such as the Endangered Species Act, require knowing whether a population is a distinct species, a subspecies or another population of a well-protected species, so this information can be the central tenet of a recovery plan. Finally, ex situ conservation programmes require knowledge of individual pedigrees to select appropriate individuals for their captive breeding programmes and for reintroduction (e.g. Johnson et al. 2010) decisions, which are founded on a basic understanding of population genetics. Conservation Issues (10) ‘Conservation biologists are only interested in charismatic megafauna, and the animals that I study do not qualify’ Conservation biology is concerned with an enormous diversity of invertebrate, vertebrate and plant species because populations of so many are declining. Although conservation biologists try to use a subset of species as short cuts (e.g. in locating areas of species richness, setting up reserves, and indicating ecosystem health; Caro 2010a), the chosen species are often noncharismatic. For example, desmid (green algae) diversity is used to assess conservation value of aquatic habitats (Coesel 2001), stoneflies are early indicators of climatic warming in mountain ecosystems (Muhlfeld et al. 2011), and dung beetle species diversities are sensitive to different forms of land use (Aguilar-Amuchastegui & Henebry 2007). As an academic discipline, conservation biology is no slave to charisma. The impression of a megafaunal bias is created by the news media, which focuses its attention on charismatic species. After all, charisma is good for public relations, and it helps to bring in money. This is why conservation flagship species typically are large, beautiful, endangered top predatory mammals and birds (Clucas et al. 2008), such as the World Wildlife Fund’s familiar giant panda mascot. These species are used by NGOs, zoos and governments to promote conservation awareness, set up reserves and raise funds, and in self-promotion. Donor-driven conservation funding opportunities also are centred on charismatic species such as the National Geographic Society’s Big Cat Initiative. However, there are also conservation funding arenas that focus on habitats (e.g. Conservation International’s funding programme) and ecological interactions (e.g. National Science Foundation, U.S.; Natural Environment Research Council, U.K.), and a broader taxonomic array of flagship species is increasingly being used to promote conservation, including poikilothermic taxa (Barua et al. 2012). Furthermore, many important conservation decisions that affect whole ecosystems involve seemingly ‘insignificant’ species such as the delta smelt, Hypomesus transpacificus, a small fish living in northern California surrounded by high human population density (Bennett 2005). Disciplinary Differences (11) ‘Conservation biology is less intellectually stimulating than animal behaviour’ Conservation biology and animal behaviour involve the integration of theory and empirical evidence to test hypotheses. The intellectual excitement of finding answers to questions about biological phenomena is common to both fields. Understanding the responses of populations to ecological and anthropogenic drivers is as fascinating to a conservation biologist as understanding the mechanisms underlying communication, sex allocation or mate choice is to an animal behaviourist. And practitioners of both fields derive satisfaction from thinking through difficult problems and devising new approaches to solving them. A number of senior and prominent animal behaviourists have turned their efforts to conservation issues (e.g. Bateson & Bradshaw 1997; Mace & Purvis 2008; Goodall 2009; Sih et al. 2010b; Estes et al. 2011; Møller & Mousseau 2011; Packer et al. 2011), casting doubt on the assertion that conservation biology lacks intellectual content or is based solely on system-specific hypotheses. Unlike animal behaviourists, however, conservation scientists often work with many stakeholders to forge compromises. This can be immensely challenging because it involves understanding the pressures that individuals and corporations face in conducting business and making land use decisions, in grasping the pressures that politicians are under from their constituents and that NGOs experience from their donors, as well as the challenges fauna and T. Caro, P. W. Sherman / Animal Behaviour 85 (2013) 305e312 flora face from ecological and anthropogenic forces (Margules & Pressey 2000). It is intellectually stimulating to steer a course through these divergent interests, and many animal behaviourists will be good at rising to this challenge. (12) ‘Behavioural biology is rich in theory, but there is no theory in conservation biology’ In a sense, this statement is true. Animal behaviourists use general theory based on first principles (Darwinian fitness) that can potentially be applied to any species, whereas conservation biologists tend to view general theory as too unspecific to be useful and instead rely on system-specific models (which pure animal behaviourists may find dissatisfying) However, conservation science actually employs many different types of theory, including genetic theory as applied to small populations (Frankham 2010) and economic theory that is used in many areas of strategic decision making (e.g. reserve design: Wilson et al. 2005; land use planning: Phalan et al. 2011). Conservation principally borrows its theory from other disciplines to solve specific problems, whereas animal behaviour additionally generates new general theory itself. For example, the initial theories of reserve design were borrowed from island biogeography (Diamond 1975), and population viability modelling is based on vital rates and demographic parameters used in population biology (Beissinger & McCullough 2002). Similarly, in animal behaviour, game theory (Maynard Smith 1982) and social network theory (Wey et al. 2008) were borrowed from mathematics, and optimal foraging theory (MacArthur & Pianka 1966) was borrowed from economics but, in addition, theoretical frameworks have been generated de novo (e.g. sex allocation theory: Fisher 1958; kin selection theory: Hamilton 1964; parental investment theory: Trivers 1972). Some theoreticians may not find conservation biology to be intellectually stimulating (but see Emlen et al. 2006); however, most animal behaviourists are not purely theoreticians. Instead, they conduct science using the ‘strong inference’ approach (Platt 1964), which involves developing alternative hypotheses to explain some aspect of an organism’s behaviour (e.g. its mechanism, ontogeny or effect on fitness), deriving critical predictions from each hypothesis, and then gathering data with which to falsify each alternative. Conservation biologists often proceed in the same way, as illustrated in recent studies of whether ranging patterns affect use of corridors (Kertson et al. 2011) and whether personality traits influence the success of species introductions (Chapple et al. 2012). One supposed difference between the disciplines relates to the sample sizes routinely used to test hypotheses. Animal behaviourists can often collect large sample sizes and conduct replicated experiments, whereas conservation biologists regularly work on organisms in which sample sizes are severely constrained, by numerical rarity, by difficulties in obtaining permission to work on endangered populations, and by reluctance (both regulatory and personal) to conduct invasive procedures. However, these generalizations do not always hold: sample sizes in many important behavioural studies are not large, so sophisticated analytical techniques and statistics are required to tease out conclusions (Taborsky 2010), and major studies of pattern and process in conservation science often consist of collating metadata where sample sizes are very large and confounding variables can be controlled for (e.g. marine: Christensen et al. 2003; terrestrial: Craigie et al. 2010). PERSONAL CONSIDERATIONS Academic Issues (13) ‘I’m too busy to devote precious time to conservation activities’ We are all desperately busy. Laypeople with knowledge of how academic biologists work and live sometimes find it difficult to 309 comprehend what drives their dedication. But an academic biologist’s days are not spent entirely on research and teaching; there are meetings to attend, students to advise, manuscripts to review and grant applications to write. A portion of this time could be redirected to a conservation activity, such as conducting research on how to extricate one’s own study organism from the jaws of an evolutionary trap, helping to set up a preserve around a favourite study area, writing a report to influence listing of a study organism as threatened or endangered, or developing a new course on natural history or conservation behaviour (see Caro & Sherman 2011a for an expansive list). Certainly, life is a zero sum game, making more time for one activity necessitates taking time away from something else. But, getting involved in conservation and redirecting one’s contributions to a new endeavour can be reinvigorating, and the results will undoubtedly affect a wider segment of society. (14) ‘I don’t want to spend all my time in meetings, especially adversarial meetings’ Fair enough. But conservation is not just about meetings. Species of concern are identified and hypotheses are tested through fieldwork, population responses are assessed through monitoring, and human-imposed constraints are identified through research on land ownership, distribution of unmanipulated habitats and existing land management plans. Only when the essential biological information is available are meetings called to bring stakeholders together and make decisions. Such meetings do not have to be lengthy or adversarial. People with diplomatic skills can steer meetings to positive conclusions with minimal conflict and rancour. And, do not forget that animal behaviourists have to attend meetings too, including faculty meetings, university committee meetings, society meetings and granting committee meetings. As a result, many animal behaviourists have become skilled negotiators. Conservation Issues (15) ‘Conservation requires people skills; I’m better at watching animals’ Conservation biologists like watching animals too. Indeed, observing migrating herds, catching a glimpse of a rare individual or identifying new life-list species in the field is as thrilling to a conservation biologist as uncovering how individuals solve physiological, cognitive, social or ecological problems is to an animal behaviourist. Conservation biologists realize that, to continue to do the things they love (i.e. to be inspired by the natural world), they need to work with others to conserve nature. Being a good conservation biologist requires a variety of skills: knowledge of habitats and organisms, diplomacy, social skills, quiet tenacity and understanding of economics, to name a few. Although this is a broader array of talents than is required for being a good animal behaviourist, some animal behaviourists already possess or can readily develop these skills. (16) ‘I have been studying animal behaviour all my life; it’s too late for me to change’ This is a cop out. It is never too late to change. Embracing new ideas and expanding one’s intellectual tools and capabilities is the essence of productive science. Changes in theories, knowledge bases and methodologies move science forward. Given the fingertip-click availability of information today, motivated animal behaviourists can rapidly get up to speed on issues in conservation biology, both generally and on specific organisms and habitats. Moreover, it can be highly productive to think about behaviour and conservation simultaneously (Moore et al. 2008). If broadening 310 T. Caro, P. W. Sherman / Animal Behaviour 85 (2013) 305e312 your perspective makes you uncomfortable, it’s time to find a new gig. Despair (17) ‘Biodiversity is going to hell in a handbasket; I won’t be able to help’ Biodiversity is indeed in very serious trouble. The human footprint is expanding, and species and habitats are being lost rapidly (Sanderson et al. 2002; Millenium Ecosystem Assessment 2005). The forces behind these changes, stemming principally from overpopulation and overexploitation, are so monumental that everyone feels impotent at one time or another. But trying to take an active role against such challenges is not useless. Witness the contributions of great conservation philosophers like Henry David Thoreau, Aldo Leopold and Edward O. Wilson, conservationists like John Muir and Paul Ehrlich, or media biologists like Ansel Adams and David Attenborough. The rest of us can contribute in small but nevertheless significant ways. Animal behaviourists are in a better position than many other people to inform society of the beauty and intricacies of nature in general and the scientific and aesthetic values of behaviours in particular. Contributing to conservation is a worthwhile endeavour and the cause needs all of us. (18) ‘I get more depressed than the average person because the natural world that I love is dying; I feel paralysed’ The situation is indeed depressing and the accompanying paralysis can affect anyone. But there is no reason why an animal behaviourist should get more depressed about the loss of habitats and organisms than an ecologist, systematisist, geneticist or population biologist; indeed, no more depressed than a poet, carpenter, lawyer or mailperson. Animal Behaviour readers and authors are accustomed to learning about behaviour and educating others in interesting and engaging ways, so they ought to find it relatively easy to convince themselves and others to take positive steps both locally and globally to change the ‘business as usual’ attitude towards the natural world (see Caro 2010b; He & Hubbell 2011). And the good news is that conservation is not a litany of failures: some populations have recovered (Lotze et al. 2011), many species have been saved from extinction (Sodhi et al. 2011) and public awareness has grown. So stop wallowing in self-pity and get more involved! If every animal behaviourist were to devote some time to studying how to protect and preserve just their own beloved study organisms, the benefits to conservation could be profound. CONCLUSION In this essay, we have raised and attempted to address 18 general concerns of animal behaviourists about becoming more involved in conservation. 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