Meet our grantees
Wild Animal Initiative funds academic research on high-priority questions in wild animal welfare.
The goal of our grants program is to fund research that deepens scientific knowledge of the welfare of wild animals in order to better understand how to improve the welfare of as many wild animals as possible, regardless of what causes the threats to their well-being.
We showcase our grantees and their projects here and will be adding more in the coming weeks and months.
Developing an approach for assessing the welfare of wild birds through the use of bioacoustics analysis
Grantee: Luiza Figueiredo Passos
Institution: Liverpool John Moores University
Project summary
Vocalization analysis has been used to monitor the welfare of farmed animals and animals in laboratories, but lacks validation for wild animals. This project will use passive acoustic monitoring to record wild bird calls throughout the UK. It will identify vocal patterns and chorus characteristics related to various environmental risks that can be used to infer the welfare status of local bird populations across multiple environments. The focal species will be house sparrows, who have undergone a massive population decline and may be facing welfare challenges. Validating acoustic monitoring as a tool for non-invasive welfare monitoring in the wild for the first time will provide a method that could be used to monitor the welfare of wild birds globally.
Grantees: Luiza Figueiredo Passos
Institution: Liverpool John Moores University, United Kingdom
Grant amount: $29,060
Grant type: Small grants
Focal species: House sparrow (Passer domesticus)
Conservation status: Least concern
Disciplines: Animal welfare science, ornithology, population ecology, animal behavior
Research location: United Kingdom
Project summary
Vocalisations carry emotional, physiological, and individual information, suggesting that they can serve as potentially useful non-invasive indicators for inferring wild animal welfare. Communication of affective states via vocalization is due to changes in emotions leading to deviations in the nervous system, causing physiological changes within the vocal production systems. Modern sound analysis techniques have provided tools to discriminate, analyze, and classify specific vocalizations, permitting them to be used for monitoring welfare of different farm and laboratory animals. However, this approach lacks validation for wild individuals. This proposal aims to use passive acoustic monitoring to record wild bird calls at different locations in urban, rural, and conservation-managed areas in the UK. This project will follow a comparative approach to identify vocal patterns and chorus characteristics related to different environmental risks (starvation risk, predation risk, human disturbance, etc.) so that these vocal signatures can be used to infer the welfare status of local bird populations across different environments. The focal species will be one of Europe’s most common species, the house sparrow (Passer domesticus). House sparrows provide an ideal first validation as the species has undergone a massive population decline in many parts of its range over the past 50 years, suggesting that its local populations are facing significant welfare challenges. Validating acoustic monitoring as a tool for non-invasive welfare monitoring in the wild for the first time will provide the basis for future application to birds in general, providing a method that could be used to monitor welfare and changes in welfare of wild birds at any location globally.
Project objectives
Objective 1: Evaluate how changes in sparrow welfare driven by changes in risk of starvation can be indicated by changes in the vocal signatures of local populations.
Objective 2: Understand relationship between predation risk driven changes in sparrows’ welfare and the vocal signatures of local populations.
Objective 3: Impact of human disturbance on sparrows’ welfare.
Why we funded this project
This project is very similar to projects by Claudia Wascher and Sam Reynolds. As stated, bioacoustic monitoring is an extremely promising approach because it is minimally invasive and inexpensive. However, it still needs to be validated, and given its potential future value, we felt that it would be best for it to be validated by at least two independent studies. This project was especially appealing because it focuses on such a ubiquitous species (the house sparrow) and is led by a researcher with a strong record in bioacoustics and an understanding of animal welfare science.
Find Luiza’s other project, studying wild newts, here.
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Assessing animal welfare from bioacoustic monitoring in red-billed choughs (Pyrrhocorax pyrrhocorax)
Grantee: Claudia Wascher
Institution: Anglia Ruskin University
Project summary
Bioacoustic monitoring is a well established method of measuring welfare in captive animals, but has not been used in wild animals. This project will assess and validate the use of passive bioacoustic monitoring to assess welfare in a reintroduced population of red-billed choughs. The researchers will conduct a combination of automatic acoustic monitoring using “passive” acoustic recorders and direct observations (recording behavior via videos and monitoring activity during the night with night vision scopes) and “active” acoustic monitoring, using a high-quality directional microphone and parabolic dish. Their approach will allow them to record vocalizations and behavior during natural events expected to influence welfare, such as anthropogenic noise, predation events, intraspecific aggression, resting, or affiliative behaviors.
Grantees: Claudia Wascher
Institution: Anglia Ruskin University, United Kingdom
Grant amount: $18,679
Grant type: Small grants
Focal species: Red-billed chough (Pyrrhocorax pyrrhocorax)
Conservation status: Least concern
Disciplines: Animal welfare science, ornithology, population ecology, animal behavior
Research location: United Kingdom
Project summary
In principle, animal vocalizations can be used to identify both positive and negative experiences. Specific vocal characteristics (e.g., mean fundamental frequency) and the rate of occurrence of certain call types can help to quantify animal welfare and are well-established in farm animals such as pigs, horses, cows, and chickens. But although bioacoustic monitoring is a well-established method in captive animals, the method has not been used in wild animals to assess positive and negative emotional states. This project will assess and validate the use of passive bioacoustic monitoring to assess welfare in a reintroduced population of red-billed choughs. The researchers will conduct a combination of automatic acoustic monitoring using “passive” acoustic recorders and direct observations (recording behavior via videos, monitoring activity during the night with night vision scopes, and “active” acoustic monitoring using high-quality directional microphone and parabolic dish). Their approach will allow them to record vocalizations and behavior during natural events expected to influence welfare, such as anthropogenic noise, predation events, intraspecific aggression, resting, or affiliative behaviors.
Why we funded this project
This project will help to validate the use of passive acoustic monitoring to assess welfare states from variation in vocal behavior, which presents a non-invasive, cost-effective tool to assess the impact of positive and negative events on animal welfare. In theory, acoustic monitoring could be used to assess the welfare of a large number of individuals at a time, making it a particularly promising method to investigate.
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Investigating ways to assess and improve the welfare of leopards captured in response to conflict, in Nepal
Grantee: Jessica Bodgener
Institutions: University of Kent, Wildlife Vets International
Project summary
In Nepal, the successful recovery of tiger populations is displacing leopards from protected parks and forcing them into urban areas. This has caused an increase in conflict with people and farmed animals. Organizations responding to conflicts have limited resources and must attempt to balance animal welfare and conservation aims with public safety and sociopolitical demands. This has resulted in an ad hoc approach, with frequent interventions but little opportunity to evaluate their success. This project will focus on validating non-invasive post-release monitoring techniques, including photogrammetric assessment of body condition and measurement of hair cortisol from fecal samples, to monitor the welfare impact of translocation of leopards away from conflict areas.
Grantee: Jessica Bodgener
Institution: University of Kent and Wildlife Vets International, United Kingdom
Grant amount: $16,850
Grant type: Small grants
Focal species: Leopard (Panthera pardus)
Conservation status: Vulnerable
Disciplines: Wildlife rehabilitation, animal welfare science
Research location: Nepal, United Kingdom
Project summary
Leopards are the most widespread and adaptable of the world’s big cats, occupying a wide variety of habitats ranging from remote rainforests to busy urban centers. In Nepal, the successful recovery of tiger populations is displacing leopards from protected parks and forcing them into more populated areas. Low densities of natural prey in these areas, coupled with an abundance of easily hunted feral dogs around settlements, have resulted in leopards colonizing urban and suburban environments. This has caused an increase in conflict with people, including the predation of farmed animals and occasional human attacks. Organizations responding to conflict events have limited resources and must attempt to balance animal welfare and conservation aims with public safety and sociopolitical demands. This has resulted in an ad hoc approach, with frequent interventions, but little to no opportunity to reflect and evaluate the impact or success of these actions. This project will focus on validating entirely non-invasive post-release monitoring techniques, including photogrammetric assessment of body condition and measurement of hair cortisol from fecal samples, to monitor the impact of translocation of leopards away from conflict areas on their health and welfare.
Why we funded this project
We funded this project because it addresses two of our research priorities by seeking to validate non-invasive monitoring techniques, including hair cortisol as a measurement of chronic stress (which may be more informative of welfare than short-term measures of stress physiology). Although it focuses on leopards, the validation of these methods should be transferable to other species. The researcher, Jess Bodgener, also seems to have a long-term interest in wild animal welfare, and has genuine partnerships in place to build capacity and regard for wild animal welfare in Nepal.
The animal welfare of animal warfare: how inter-group interactions affect wild animal wellbeing
Grantee: Dominic Cram
Institution: University of Cambridge
Project summary
This project will investigate the welfare consequences of inter-group conflicts in wild Kalahari meerkats. It will use an established dataset of meerkat behavior, body weight, territory use, and reproduction, covering more than 500 inter-group interactions over 14 years. Identifying the short- and long-term welfare implications of inter-group interactions in meerkats will shed light on similar animal warfare in group-living insects, fish, birds, and mammals. Clarifying the circumstances that lead to the most harmful battles will provide a first step in understanding how their frequency could be reduced, which could limit the suffering they cause and enhance the welfare of group-living wild animals.
Grantee: Dominic Cram
Institution: University of Cambridge, United Kingdom
Grant amount: $29,965
Grant type: Small grants
Focal species: Meerkats (Suricata suricatta)
Conservation status: Least concern
Disciplines: Animal behavior, population ecology, community ecology
Research location: United Kingdom, South Africa
Project summary
Fierce group conflicts are not uniquely human, and many group-living animals regularly engage in “animal warfare.” These inter-group interactions play an influential role in natural population regulation, yet the health and well-being consequences for those involved remain unclear. Conservation and management interventions are currently developed with little understanding of how large-scale conflict affects welfare in wild animals. Given that anthropogenic habitat loss and climate change could increase the frequency of inter-group battles, there is an urgent need to investigate the welfare cost of animal warfare. This research program will investigate the welfare consequences of intergroup interactions and fights in wild Kalahari meerkats (Suricata suricatta). The project will take advantage of an established dataset of meerkat behavior, body weight, territory use, and reproduction, covering more than 500 inter-group interactions over 14 years. Identifying the short- and long-term welfare implications of inter-group interactions in meerkats will shed light on similar animal warfare in group-living insects, fish, birds, and mammals. Clarifying the circumstances that lead to the most harmful battles will provide a first step in understanding how their frequency could be reduced, which could limit the suffering they cause and enhance the welfare of group-living wild animals.
Why we funded this project
This project addresses a neglected topic related to our research priority of understanding conflicts of interest between wild animal groups. We especially appreciate this project’s holistic approach to welfare assessment, its attention to indirect effects (collateral damage) of animal conflicts in the form of costs to orphaned juveniles and the creation of a “landscape of fear,” and the openness of the investigators to considering interventions that could elevate wild animal welfare above its natural baseline.
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Development of novel measures of welfare in juvenile European starlings exposed to nutritional stress
Grantee: Melissa Bateson
Institution: Newcastle University
Project summary
Nutritional stress causes massive mortality in juvenile European starlings and has lifetime welfare consequences for survivors. The aim of this project is to identify the metabolic “fingerprint” of nutritional stress in starling nestlings and to validate molecular biomarkers that can be used to assess the welfare of wild starlings. This project will use untargeted metabolomics to identify multiple novel biomarkers of exposure to nutritional stress. This “fingerprint” will be validated by testing whether it predicts gold-standard behavioral measures of adult affective experience in a cohort of laboratory-raised birds. The aim will be to identify an applicable panel of metabolites that can be measured from feathers and guano.
Grantee: Melissa Bateson
Institution: Newcastle University, United Kingdom
Grant amount: $60,000
Grant type: Challenge grants
Focal species: Starlings (Sturnidae sp.)
Conservation status: Least concern
Disciplines: Physiology, ornithology
Research location: United Kingdom
Project summary
Juveniles of passerine species such as the European starling (Sturnus vulgaris) experience massive mortality, much of which is caused by direct or indirect effects of nutritional stress. Of birds that survive, many will bear the “scars” of early-life stress that have consequences for their welfare. The aim of this project is to identify the metabolic “fingerprint” of nutritional stress in starling nestlings and to validate sensitive and non-invasive molecular biomarkers that can be used to assess the welfare of wild starlings.
This group has been developing the hypothesis that biomarkers of biological age not only predict future morbidity and mortality, but also reflect the quality of an animal’s cumulative lifetime experience. Existing metrics of biological age, particularly telomere length, require invasive blood samples, and measurements are imprecise, meaning that large sample sizes are currently required to obtain significant effects in epidemiological studies. Estimating biological age based on measuring multiple age-related biomarkers (as is typical in the human aging literature) is likely to be more reliable than using telomere length alone.
This project will use untargeted metabolomics to identify multiple novel biomarkers of exposure to nutritional stress in nestling starlings. This “fingerprint” will be validated by testing whether it predicts gold-standard behavioral measures of adult affective experience in a cohort of laboratory-raised birds. Metabolomics measures thousands of small molecules in one biological sample and can be performed on a range of tissues including blood, hair, and urine. The aim will be to identify an applicable panel of metabolites that can be measured cheaply and easily from feathers and the uric acid component of guano.
Why we funded this project
This project should introduce a novel indicator of long-term welfare that is less invasive, requires fewer resources, and is potentially more reliable than similar existing methods. The PI is a world leader in the field of animal behavior and is the main originator of using biological aging to understand long-term animal welfare, especially in non-model species. For that reason, we are especially confident in this work being high-quality and having great academic reach and influence.
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It takes guts to grow in the city: the role of the gut microbiome in the welfare of juvenile urban birds
Grantee: Pablo Capilla-Lasheras
Institution: University of Glasgow
Project summary
Approximately 30 million blue tits hatch every year in UK cities, but around 63% die as juveniles. One reason for this may be that juvenile birds in urban habitats tend to have low-quality diets, causing stunted growth and increased early-life mortality. Research suggests that gut microbiome composition may contain indicators of an animal’s welfare, but this has received little attention in a wild animal context. This project will combine telomere attrition, begging behavior, and other health metrics with a study of juvenile birds’ gut microbiomes to investigate how to improve the welfare of juvenile blue tits in urban areas. It will also test the potential for gut microbiome enrichment to improve the life experience of juvenile birds in urban habitats.
Grantee: Pablo Capilla-Lasheras
Institution: University of Glasgow, United Kingdom
Grant amount: $59,052
Grant type: Challenge grants
Focal species: Blue tits (Cyanistes caeruleus)
Conservation status: Least concern
Disciplines: Physiology, population ecology, animal welfare science, ornithology, animal behavior
Research location: United Kingdom
Publications
Reid, R., et al. (2024). The impact of urbanization on health depends on the health metric, life stage and level of urbanization: a global meta-analysis on avian species. Proceedings of the Royal Society B, 291(2027). https://doi.org/10.1098/rspb.2024.0617
Project summary
Amongst the novel stressors that wildlife face in cities, shifts in diet are prevalent and have negative consequences for welfare, particularly in juveniles. Research clearly shows that juvenile birds in urban habitats have low-quality diets, causing stunted growth and increased early-life mortality. For example, in the UK alone, approximately 30 million blue tits hatch every year in cities, but around 63% of them die as juveniles. This project will study juvenile blue tits and investigate how to improve their welfare in urban areas using an integrative approach that will combine metrics of animal welfare with the study of gut microbiomes. Human and captive animal studies suggest that the gut microbiome composition may contain indicators of an animal’s welfare, but this has received little attention in a wild animal context. This study will combine a physiological welfare indicator (telomere attrition), a behavioral welfare indicator (begging behavior), and other health metrics with a study of juvenile birds’ gut microbiomes to link poor-quality urban diets, gut microbiome composition, and welfare. The project will also test a potential near-term dietary intervention (gut microbiome enrichment) to improve the life experience of juvenile birds growing in urban habitats.
Why we funded this project
Welfare is shaped by, and in turn influences, numerous aspects of an animal’s phenotype. Individual welfare indicators offer only limited insights, but combining indicators across multiple domains is thought to be extremely important for triangulating affective state, or “true” welfare. Because the gut microbiome represents a partially distinct domain, understanding how it relates to welfare could therefore strengthen all of our other indicators when they are used in combination. We were especially interested in this project due to the inclusion of an intervention experiment that could be implemented in the near future. Finally, this project will support an early-career researcher with an interest in wild animal welfare.
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Density-Dependent Welfare in Wild Bird Social Networks: Linking resource distributions with disease dynamics
Grantee: Joshua Firth
Institution: University of Oxford
Project summary
This project will investigate how various potential density-dependent drivers of welfare interact and influence net welfare in two species of tit. Population density is expected to be directly related to infectious disease transfer and increased competition, but also to covary with processes that are potentially beneficial to welfare. The study will use historical data to determine how the relationship between population density and individual welfare is shaped by infectious disease, body condition, and mortality risk. The investigators will then manipulate density experimentally to test model outputs and determine potential causal links.
Grantee: Josh Firth
Institution: University of Oxford, United Kingdom
Grant amount: $99,466
Grant type: Challenge grants
Focal species: Great tits (Parus major), blue tits (Cyanistes caeruleus)
Conservation status: Least concern
Disciplines: Animal behavior, community ecology, infectious disease, population ecology, ornithology, bio/eco-informatics, ecological modeling, animal welfare science
Research location: United Kingdom
Project summary
This project seeks to understand the interplay among various potential density-dependent drivers of positive and negative welfare impacts to determine net welfare related to aggregation (increased density) in wild birds (two species of tit). Infectious disease transfer and increased competition, both likely to reduce welfare, are expected to be directly related to population density. However, population density also covaries with processes that are potentially beneficial to welfare, such as congregation around areas that provide high nutrition, various social benefits, opportunities for increased cooperation, or access to social information. The study will use long-term datasets to empirically determine how the relationship between population density and individual welfare is shaped by infectious disease, including the density-dependent relationship with disease spread. Additionally, using historical data, the project will test how population density, mediated by social contact, environment, and disease, determines individuals’ body condition and mortality risk. Based on the results of this observational phase of the study, the investigators will then manipulate density experimentally, to test model outputs and determine potential causal links.
Why we funded this project
This project brings two unique advantages. First, the investigators have access to a population that has been subject to intensive monitoring for decades, meaning that much of the relevant ecological context is known and there is historical data to analyze retrospectively. Secondly, in part due to this long-term monitoring, the birds are tagged and observed at feeding stations equipped with RFID tags/readers that allow for experimental manipulation of the density and identity of birds feeding at particular stations. By empirically testing density-dependent models of welfare, the project could provide an increased understanding of the interplay among population density, infectious disease, and various social and environmental characteristics, and in doing so, identify drivers of welfare in wild birds.
