Margaret C Crofoot
Biographic Data
| ID | 3073109 |
|---|---|
| NAME | Margaret C Crofoot |
| GIVEN NAMES | Margaret C |
| FAMILY NAME | Crofoot |
| SIGNATURE | CROFOOT M C |
| AFFILIATIONS | Smithsonian Tropical Research Institute |
| ORCID | 0000-0002-0056-7950 |
| VERIFIED | Yes |
| TOTAL WORKS | 17 |
| TOTAL CITATIONS | 47 |
| AUTHOR COUNT | 17 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2009 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 4 |
Ecological and Social Pressures Influence Diel Activity Patterns in Wild Tibetan Macaques
The nighttime behavior of diurnal species is a “black box.” Although diurnal animals spend approximately half their lives in the dark, research has, for too long, relied on the simplifying assumption that what we can't observe isn't important. Advances in our ability to monitor nighttime behavior reveal that this is incorrect; essential biological and behavioral processes play out in the dark which are critical for understanding a species' ecolog…
Male‐biased stone tool use by wild white‐faced capuchins ( Cebus capucinus imitator )
Tool‐using primates often show sex differences in both the frequency and efficiency of tool use. In species with sex‐biased dispersal, such within‐group variation likely shapes patterns of cultural transmission of tool‐use traditions between groups. On the Panamanian islands of Jicarón and Coiba, a population of white‐faced capuchins ( Cebus capucinus imitator )—some of which engage in habitual stone tool use—provide an opportunity to test hypoth…
The Importance of Representative Sampling for Home Range Estimation in Field Primatology
Understanding the amount of space required by animals to fulfill their biological needs is essential for comprehending their behavior, their ecological role within their community, and for effective conservation planning and resource management. The space-use patterns of habituated primates often are studied by using handheld GPS devices, which provide detailed movement information that can link patterns of ranging and space-use to the behavioral…
Point of Care Blood Gas and Electrolyte Analysis in Anesthetized Olive Baboons (Papio anubis) in a Field Setting
Do Monkeys Avoid Areas of Home Range Overlap Because They Are Dangerous? A Test of the Risk Hypothesis in White-Faced Capuchin Monkeys (Cebus capucinus)
In social animals, areas where the home ranges of neighboring groups overlap are often underused. The Risk Hypothesis posits that the costs of intergroup conflict create a “landscape of fear,” discouraging the use of such shared areas. To test this hypothesis, we observed the behavior of white-faced capuchins ( Cebus capucinus ) in central vs. peripheral areas of their home ranges. If capuchins perceive areas of home range overlap as “risky,” we …
White-Faced Capuchin, Cebus capucinus imitator, Hammerstone and Anvil Tool Use in Riparian Habitats on Coiba Island, Panama
Increased terrestriality in a Neotropical primate living on islands with reduced predation risk
An arboreal lifestyle is thought to be central to primate origins, and most extant primate species still live in the trees. Nonetheless, terrestrial locomotion is a widespread adaptation that has arisen repeatedly within the primate lineage. The absence of terrestriality among the New World monkeys (Platyrrhini) is thus notable and raises questions about the ecological pressures that constrain the expansion of platyrrhines into terrestrial niches…
Blood Biochemical Reference Intervals for Free-Ranging Olive Baboons (Papio anubis) in Kenya
Evidence for High Variability in Temporal Features of the Male Coda in Müller’s Bornean Gibbons (Hylobates muelleri)
GPS-identified vulnerabilities of savannah-woodland primates to leopard predation and their implications for early hominins
Investigating Individual Vocal Signatures and Small-Scale Patterns of Geographic Variation in Female Bornean Gibbon (Hylobates muelleri) Great Calls
GPS‐identified, low‐level nocturnal activity of vervets ( Chlorocebus pygerythrus ) and olive baboons ( Papio anubis ) in Laikipia, Kenya
OBJECTIVES: Except for owl monkeys (Aotus spp.), all anthropoid primates are considered strictly diurnal. Recent studies leveraging new technologies have shown, however, that some diurnal anthropoids also engage in nocturnal activity. Here we examine the extent to which vervets (Chlorocebus pygerythrus) and olive baboons (Papio anubis) are active at night. MATERIALS AND METHODS: We deployed GPS collars with tri-axial accelerometer data loggers on…
Spatiotemporal Interactions Among Three Neighboring Groups of Free-Ranging White-Footed Tamarins (Saguinus leucopus) in Colombia
The cost of defeat: Capuchin groups travel further, faster and later after losing conflicts with neighbors
Although competition between social groups is central to hypotheses about the evolution of human social organization, competitive interactions among group‐mates are thought to play a more dominant role in shaping the behavior and ecology of other primate species. However, few studies have directly tested the impact of intergroup conflicts in non‐human primates. What is the cost of defeat? To address this question, the movements of six neighboring…
Risky Business? Lethal Attack by a Jaguar Sheds Light on the Costs of Predator Mobbing for Capuchins (Cebus capucinus)
Aggression, grooming and group‐level cooperation in white‐faced capuchins ( Cebus capucinus ): Insights from social networks
The form of animal social systems depends on the nature of agonistic and affiliative interactions. Social network theory provides tools for characterizing social structure that go beyond simple dyadic interactions and consider the group as a whole. We show three groups of capuchin monkeys from Barro Colorado Island, Panama, where there are strong connections between key aspects of aggression, grooming, and proximity networks, and, at least among …
Field Anesthesia and Health Assessment of Free-ranging Cebus capucinus in Panama
Health and disease are critical factors for understanding primate evolution and for developing effective conservation and management strategies. However, comprehensive health assessments of wild primate populations are rare, in part because of the difficulty and risk of chemically immobilizing subjects to obtain the necessary biological samples. We report here the results of a health assessment, as well as the methods and drug dosages used to cap…
The cost of defeat: Capuchin groups travel further, faster and later after losing conflicts with neighbors
Although competition between social groups is central to hypotheses about the evolution of human social organization, competitive interactions among group‐mates are thought to play a more dominant role in shaping the behavior and ecology of other primate species. However, few studies have directly tested the impact of intergroup conflicts in non‐human primates. What is the cost of defeat? To address this question, the movements of six neighboring…
GPS-identified vulnerabilities of savannah-woodland primates to leopard predation and their implications for early hominins
Investigating Individual Vocal Signatures and Small-Scale Patterns of Geographic Variation in Female Bornean Gibbon (Hylobates muelleri) Great Calls
Risky Business? Lethal Attack by a Jaguar Sheds Light on the Costs of Predator Mobbing for Capuchins (Cebus capucinus)
Do Monkeys Avoid Areas of Home Range Overlap Because They Are Dangerous? A Test of the Risk Hypothesis in White-Faced Capuchin Monkeys (Cebus capucinus)
In social animals, areas where the home ranges of neighboring groups overlap are often underused. The Risk Hypothesis posits that the costs of intergroup conflict create a “landscape of fear,” discouraging the use of such shared areas. To test this hypothesis, we observed the behavior of white-faced capuchins ( Cebus capucinus ) in central vs. peripheral areas of their home ranges. If capuchins perceive areas of home range overlap as “risky,” we …
Increased terrestriality in a Neotropical primate living on islands with reduced predation risk
An arboreal lifestyle is thought to be central to primate origins, and most extant primate species still live in the trees. Nonetheless, terrestrial locomotion is a widespread adaptation that has arisen repeatedly within the primate lineage. The absence of terrestriality among the New World monkeys (Platyrrhini) is thus notable and raises questions about the ecological pressures that constrain the expansion of platyrrhines into terrestrial niches…
Field Anesthesia and Health Assessment of Free-ranging Cebus capucinus in Panama
Health and disease are critical factors for understanding primate evolution and for developing effective conservation and management strategies. However, comprehensive health assessments of wild primate populations are rare, in part because of the difficulty and risk of chemically immobilizing subjects to obtain the necessary biological samples. We report here the results of a health assessment, as well as the methods and drug dosages used to cap…
Spatiotemporal Interactions Among Three Neighboring Groups of Free-Ranging White-Footed Tamarins (Saguinus leucopus) in Colombia
White-Faced Capuchin, Cebus capucinus imitator, Hammerstone and Anvil Tool Use in Riparian Habitats on Coiba Island, Panama
GPS‐identified, low‐level nocturnal activity of vervets ( Chlorocebus pygerythrus ) and olive baboons ( Papio anubis ) in Laikipia, Kenya
OBJECTIVES: Except for owl monkeys (Aotus spp.), all anthropoid primates are considered strictly diurnal. Recent studies leveraging new technologies have shown, however, that some diurnal anthropoids also engage in nocturnal activity. Here we examine the extent to which vervets (Chlorocebus pygerythrus) and olive baboons (Papio anubis) are active at night. MATERIALS AND METHODS: We deployed GPS collars with tri-axial accelerometer data loggers on…
Blood Biochemical Reference Intervals for Free-Ranging Olive Baboons (Papio anubis) in Kenya
Evidence for High Variability in Temporal Features of the Male Coda in Müller’s Bornean Gibbons (Hylobates muelleri)
Field Anesthesia and Health Assessment of Free-ranging Cebus capucinus in Panama
Health and disease are critical factors for understanding primate evolution and for developing effective conservation and management strategies. However, comprehensive health assessments of wild primate populations are rare, in part because of the difficulty and risk of chemically immobilizing subjects to obtain the necessary biological samples. We report here the results of a health assessment, as well as the methods and drug dosages used to cap…
Aggression, grooming and group‐level cooperation in white‐faced capuchins ( Cebus capucinus ): Insights from social networks
The form of animal social systems depends on the nature of agonistic and affiliative interactions. Social network theory provides tools for characterizing social structure that go beyond simple dyadic interactions and consider the group as a whole. We show three groups of capuchin monkeys from Barro Colorado Island, Panama, where there are strong connections between key aspects of aggression, grooming, and proximity networks, and, at least among …
Risky Business? Lethal Attack by a Jaguar Sheds Light on the Costs of Predator Mobbing for Capuchins (Cebus capucinus)
Spatiotemporal Interactions Among Three Neighboring Groups of Free-Ranging White-Footed Tamarins (Saguinus leucopus) in Colombia
The cost of defeat: Capuchin groups travel further, faster and later after losing conflicts with neighbors
Although competition between social groups is central to hypotheses about the evolution of human social organization, competitive interactions among group‐mates are thought to play a more dominant role in shaping the behavior and ecology of other primate species. However, few studies have directly tested the impact of intergroup conflicts in non‐human primates. What is the cost of defeat? To address this question, the movements of six neighboring…
Investigating Individual Vocal Signatures and Small-Scale Patterns of Geographic Variation in Female Bornean Gibbon (Hylobates muelleri) Great Calls
GPS‐identified, low‐level nocturnal activity of vervets ( Chlorocebus pygerythrus ) and olive baboons ( Papio anubis ) in Laikipia, Kenya
OBJECTIVES: Except for owl monkeys (Aotus spp.), all anthropoid primates are considered strictly diurnal. Recent studies leveraging new technologies have shown, however, that some diurnal anthropoids also engage in nocturnal activity. Here we examine the extent to which vervets (Chlorocebus pygerythrus) and olive baboons (Papio anubis) are active at night. MATERIALS AND METHODS: We deployed GPS collars with tri-axial accelerometer data loggers on…
Evidence for High Variability in Temporal Features of the Male Coda in Müller’s Bornean Gibbons (Hylobates muelleri)
GPS-identified vulnerabilities of savannah-woodland primates to leopard predation and their implications for early hominins
Blood Biochemical Reference Intervals for Free-Ranging Olive Baboons (Papio anubis) in Kenya
Do Monkeys Avoid Areas of Home Range Overlap Because They Are Dangerous? A Test of the Risk Hypothesis in White-Faced Capuchin Monkeys (Cebus capucinus)
In social animals, areas where the home ranges of neighboring groups overlap are often underused. The Risk Hypothesis posits that the costs of intergroup conflict create a “landscape of fear,” discouraging the use of such shared areas. To test this hypothesis, we observed the behavior of white-faced capuchins ( Cebus capucinus ) in central vs. peripheral areas of their home ranges. If capuchins perceive areas of home range overlap as “risky,” we …
White-Faced Capuchin, Cebus capucinus imitator, Hammerstone and Anvil Tool Use in Riparian Habitats on Coiba Island, Panama
Increased terrestriality in a Neotropical primate living on islands with reduced predation risk
An arboreal lifestyle is thought to be central to primate origins, and most extant primate species still live in the trees. Nonetheless, terrestrial locomotion is a widespread adaptation that has arisen repeatedly within the primate lineage. The absence of terrestriality among the New World monkeys (Platyrrhini) is thus notable and raises questions about the ecological pressures that constrain the expansion of platyrrhines into terrestrial niches…
Point of Care Blood Gas and Electrolyte Analysis in Anesthetized Olive Baboons (Papio anubis) in a Field Setting
Male‐biased stone tool use by wild white‐faced capuchins ( Cebus capucinus imitator )
Tool‐using primates often show sex differences in both the frequency and efficiency of tool use. In species with sex‐biased dispersal, such within‐group variation likely shapes patterns of cultural transmission of tool‐use traditions between groups. On the Panamanian islands of Jicarón and Coiba, a population of white‐faced capuchins ( Cebus capucinus imitator )—some of which engage in habitual stone tool use—provide an opportunity to test hypoth…
The Importance of Representative Sampling for Home Range Estimation in Field Primatology
Understanding the amount of space required by animals to fulfill their biological needs is essential for comprehending their behavior, their ecological role within their community, and for effective conservation planning and resource management. The space-use patterns of habituated primates often are studied by using handheld GPS devices, which provide detailed movement information that can link patterns of ranging and space-use to the behavioral…
Ecological and Social Pressures Influence Diel Activity Patterns in Wild Tibetan Macaques
The nighttime behavior of diurnal species is a “black box.” Although diurnal animals spend approximately half their lives in the dark, research has, for too long, relied on the simplifying assumption that what we can't observe isn't important. Advances in our ability to monitor nighttime behavior reveal that this is incorrect; essential biological and behavioral processes play out in the dark which are critical for understanding a species' ecolog…
Primate Behavior and Ecology (17 works) · Biology (16 works) · Ecology (15 works) · Animal Vocal Communication and Behavior (10 works) · Animal ecology (9 works) · Geography (9 works) · Animal Behavior and Reproduction (8 works) · Zoology (8 works) · Primate (7 works) · Wildlife Ecology and Conservation (7 works)