All Outputs (164)

Selfish behaviour as an anti-predator response in schooling fish? (2013)
Journal Article
Goulart, V. D. R., & Young, R. J. (2013). Selfish behaviour as an anti-predator response in schooling fish?. Animal Behaviour, 86(2), 443-450. https://doi.org/10.1016/j.anbehav.2013.05.041

One widely acknowledged benefit of group living is an increase in the efficiency of predator avoidance. Experiments have demonstrated a variety of mechanisms involved, such as ‘the selfish herd’. In this experiment we exposed groups of two-spot astya... Read More about Selfish behaviour as an anti-predator response in schooling fish?.

Can captive-bred American bullfrogs learn to avoid a model avian predator? (2013)
Journal Article
Teixeira, B., & Young, R. (2013). Can captive-bred American bullfrogs learn to avoid a model avian predator?. Acta ethologica, 17(1), 15-22. https://doi.org/10.1007/s10211-013-0150-8

Animals that are isolated from their natural predators may lose the ability to express antipredator behavior. The aim of this study was to test whether it would be possible to train captive-bred North American bullfrogs (Rana catesbeiana) to avoid a... Read More about Can captive-bred American bullfrogs learn to avoid a model avian predator?.

Visitor influence on the behavior of captive greater rheas (Rhea americana, Rheidae Aves) (2012)
Journal Article
de Azevedo, C., Lima, M., da Silva, V., Young, R., & Rodrigues, M. (2012). Visitor influence on the behavior of captive greater rheas (Rhea americana, Rheidae Aves). Journal of Applied Animal Welfare Science, 15(2), https://doi.org/10.1080/10888705.2012.624895

Visitors can affect and reduce the welfare of nonhuman animals. The Belo Horizonte Zoo, Brazil, had a group of greater rheas intended for reintroduction to the wild. Because this group received public visitation, evaluating its effect on the birds' b... Read More about Visitor influence on the behavior of captive greater rheas (Rhea americana, Rheidae Aves).

Using environmental enrichment to reduce the expression of abnormal behaviours in Greater rheaRhea americanaat Belo Horizonte Zoo: Short Report: Belo Horizonte Zoo: Greater Rhea: Environmental Enrichment & Behavioural Changes (2012)
Journal Article
de Azevedo, C. S., Lima, M. F. F., Cipreste, C. F., Young, R. J., & Rodrigues, M. (2013). Using environmental enrichment to reduce the expression of abnormal behaviours in Greater rheaRhea americanaat Belo Horizonte Zoo: Short Report: Belo Horizonte Zoo: Greater Rhea: Environmental Enrichment & Behavioural Changes. International Zoo Yearbook, 47(1), 163-170. https://doi.org/10.1111/j.1748-1090.2012.00195.x

Animals kept by zoos may express abnormal behaviours that are indicators of poor welfare. Environmental enrichment is a technique of providing items to animals that stimulate the expression of normal behaviours. The aim of this study was to evaluate... Read More about Using environmental enrichment to reduce the expression of abnormal behaviours in Greater rheaRhea americanaat Belo Horizonte Zoo: Short Report: Belo Horizonte Zoo: Greater Rhea: Environmental Enrichment & Behavioural Changes.

Using environmental enrichment to reduce the expression of abnormal behaviours in Greater rhea Rhea americana at Belo Horizonte Zoo (2012)
Journal Article
de Azevedo, C., Lima, M., Cipreste, C., Young, R., & Rodrigues, M. (2013). Using environmental enrichment to reduce the expression of abnormal behaviours in Greater rhea Rhea americana at Belo Horizonte Zoo. International Zoo Yearbook, 47(1), 163-170. https://doi.org/10.1111/j.1748-1090.2012.00195.x

Animals kept by zoos may express abnormal behaviours that are indicators of poor welfare. Environmental enrichment is a technique of providing items to animals that stimulate the expression of normal behaviours. The aim of this study was to evaluate... Read More about Using environmental enrichment to reduce the expression of abnormal behaviours in Greater rhea Rhea americana at Belo Horizonte Zoo.

Evidence for semantic communication in titi monkey alarm calls (2012)
Journal Article
Casar, C., Byrne, R., Hoppitt, W., Young, R., & Zuberbuhler, K. (2012). Evidence for semantic communication in titi monkey alarm calls. Animal Behaviour, 84(2), 405-411. https://doi.org/10.1016/j.anbehav.2012.05.010

Black-fronted titi monkeys, Callicebus nigrifrons, produce acoustically distinct vocalizations in response to several predator species. Compared to other primates, the calls are remarkably quiet, high-pitched and structurally simple, suggesting that... Read More about Evidence for semantic communication in titi monkey alarm calls.

The welfare of an unwanted guest in an urban environment: the case of the white-eared opossum (Didelphis albiventris) (2012)
Journal Article
Sousa, C., Teixeria, C., & Young, R. (2012). The welfare of an unwanted guest in an urban environment: the case of the white-eared opossum (Didelphis albiventris). Animal Welfare Journal, 21(2), https://doi.org/10.7120/09627286.21.2.177

One major problem facing wildlife is urbanisation, and the increasing contact between human city dwellers and animals. In this study, we investigated the problems of urban opossums (Didelphis albiventris), through the analysis involving responses to... Read More about The welfare of an unwanted guest in an urban environment: the case of the white-eared opossum (Didelphis albiventris).

Does people’s knowledge about an endangered bird species differ between rural and urban communities? The case of the Greater Rhea (Rhea americana, Rheidae) in Minas Gerais, Brazil (2012)
Journal Article
de Azevedo, C., Silva, K., Ferraz, J., Tinoco, H., Young, R., & Rodrigues, M. (2012). Does people’s knowledge about an endangered bird species differ between rural and urban communities? The case of the Greater Rhea (Rhea americana, Rheidae) in Minas Gerais, Brazil. #Journal not on list, 20(47), 8-18

Failure of captive-born greater rheas (Rhea americana, Rheidae, Aves) to discriminate between predator and nonpredator models (2012)
Journal Article
de Azevedo, C., Young, R., & Rodrigues, M. (2012). Failure of captive-born greater rheas (Rhea americana, Rheidae, Aves) to discriminate between predator and nonpredator models. Acta ethologica, 15, 179-185. https://doi.org/10.1007/s10211-012-0124-2

The capacity to recognize and respond to predators can be lost by captive animals. Habituation to humans caused by the captive environment can be transferred to other stimuli, such as predators, a situation that conservation biologists wish to avoid.... Read More about Failure of captive-born greater rheas (Rhea americana, Rheidae, Aves) to discriminate between predator and nonpredator models.

The diet of wild black-fronted titi monkeys Callicebus nigrifrons during a bamboo masting year (2012)
Journal Article
los Santos, G., Galvao, C., & Young, R. (2012). The diet of wild black-fronted titi monkeys Callicebus nigrifrons during a bamboo masting year. Primates, 53, 265-272. https://doi.org/10.1007/s10329-012-0295-5

Black-fronted titi monkeys, Callicebus nigrifrons, are endemic primates of the Atlantic forest of Brazil, and little is known about their diet and how it is affected by seasonal changes. The aim of this study is to analyze the diet of C. nigrifrons d... Read More about The diet of wild black-fronted titi monkeys Callicebus nigrifrons during a bamboo masting year.

The alarm call system of wild black-fronted titi monkeys, Callicebus nigrifrons (2012)
Journal Article
Casar, C., Byrne, R., Young, R., & Zuberbuhler, K. (2012). The alarm call system of wild black-fronted titi monkeys, Callicebus nigrifrons. Behavioral Ecology and Sociobiology, 66, 653-667. https://doi.org/10.1007/s00265-011-1313-0

Upon encountering predators, many animals produce specific vocalisations that alert others and sometimes dissuade the predators from hunting. Callicebus monkeys are known for their large vocal repertoire, but little is known about the function and me... Read More about The alarm call system of wild black-fronted titi monkeys, Callicebus nigrifrons.

Feeding and social behavior of the piabanha, Brycon devillei (Castelnau, 1855)(Characidae: Bryconinae) in the wild, with a note on following behavior (2011)
Journal Article
Azevedo, P., Melo, R., & Young, R. (2011). Feeding and social behavior of the piabanha, Brycon devillei (Castelnau, 1855)(Characidae: Bryconinae) in the wild, with a note on following behavior. #Journal not on list, 9(4), https://doi.org/10.1590/S1679-62252011005000046

Knowledge concerning the behavior of wild freshwater fishes in Brazil is restricted to a few studies, despite such studies being able to answer fundamental questions about conservation. Species of Brycon are amongst the most threatened in the Neotrop... Read More about Feeding and social behavior of the piabanha, Brycon devillei (Castelnau, 1855)(Characidae: Bryconinae) in the wild, with a note on following behavior.

Designing laboratory marmoset housing: What can we learn from urban marmosets? (2011)
Journal Article
Duarte, M., Goulart, V., & Young, R. (2012). Designing laboratory marmoset housing: What can we learn from urban marmosets?. Applied Animal Behaviour Science, 137(3-4), 127-136. https://doi.org/10.1016/j.applanim.2011.11.013

How to house animals in captivity, so as to maximise their level of well-being, is one of the greatest practical challenges facing animal welfare scientists. Laboratory animal housing can, necessarily, be very restrictive in terms of the facilities b... Read More about Designing laboratory marmoset housing: What can we learn from urban marmosets?.

Behavioral responses of maned wolves (Chrysocyon brachyurus, Canidae) to different categories of environmental enrichment stimuli and their implications for successful reintroduction (2011)
Journal Article
Coelho, C., de Azevedo, C., & Young, R. (2012). Behavioral responses of maned wolves (Chrysocyon brachyurus, Canidae) to different categories of environmental enrichment stimuli and their implications for successful reintroduction. Zoo Biology, 31(4), 453-469. https://doi.org/10.1002/zoo.20410

The maned wolf (Chrysocyon brachyurus, Illiger, 1815, Canidae) is a threatened species that inhabits the cerrados of Brazil, Argentina, Peru, Bolivia, Paraguay, and Uruguay. Captive maned wolves could be potentially used in reintroduction programs fo... Read More about Behavioral responses of maned wolves (Chrysocyon brachyurus, Canidae) to different categories of environmental enrichment stimuli and their implications for successful reintroduction.

Noisy human neighbours affect where urban monkeys live (2011)
Journal Article
Duarte, M., Vecci, M., Hirsch, A., & Young, R. (2011). Noisy human neighbours affect where urban monkeys live. Biology Letters, 7(6), https://doi.org/10.1098/rsbl.2011.0529

Urban areas and many natural habitats are being dominated by a new selection pressure: anthropogenic noise. The ongoing expansion of urban areas, roads and airports throughout the world makes the noise almost omnipresent. Urbanization and the increas... Read More about Noisy human neighbours affect where urban monkeys live.

Human--marmoset interactions in a city park (2011)
Journal Article
Leite, G., Duarte, M., & Young, R. (2011). Human--marmoset interactions in a city park. Applied Animal Behaviour Science, 132(3-4), 187-192. https://doi.org/10.1016/j.applanim.2011.03.013

Urban wildlife, frequently, comes into contact with human city dwellers and these interactions can be viewed positively or negatively by people. In the city of Belo Horizonte (Minas Gerais, Brazil) many city parks have groups of black-tufted marmoset... Read More about Human--marmoset interactions in a city park.

Cortisol Circadian Rhythm Ratio: A Simple Method to Detect Stressed Horses at Higher Risk of Colic? (2011)
Journal Article
Leal, B., Alves, G., Douglas, R., Bringel, B., Young, R., Haddad, J., …Faleiros, R. (2011). Cortisol Circadian Rhythm Ratio: A Simple Method to Detect Stressed Horses at Higher Risk of Colic?. Journal of Equine Veterinary Science, 31(4), 188-190. https://doi.org/10.1016/j.jevs.2011.02.005

With the hypothesis that police horses with abnormal cortisol circadian rhythm (CCR) had more chance to develop colic, the aim of this study was to determine the CCR ratio in horses subjected to different housing and work conditions and to associate... Read More about Cortisol Circadian Rhythm Ratio: A Simple Method to Detect Stressed Horses at Higher Risk of Colic?.

Sleeping site selection by urban marmosets (Callithrix penicillata) under conditions of exceptionally high predator density (2010)
Journal Article
Duarte, M., & Young, R. (2011). Sleeping site selection by urban marmosets (Callithrix penicillata) under conditions of exceptionally high predator density. International Journal of Primatology, 32, 329-334. https://doi.org/10.1007/s10764-010-9468-5

Domestic cats are known to kill small mammals and birds, and represent a predatory threat to all small wildlife. We investigated whether a high cat density affects the choice of sleeping sites of urban marmosets (Callithrix penicillata). One group of... Read More about Sleeping site selection by urban marmosets (Callithrix penicillata) under conditions of exceptionally high predator density.

Role of Brazilian zoos in ex situ bird conservation: from 1981 to 2005 (2010)
Journal Article
Azevedo, C., Young, R., & Rodrigues, M. (2011). Role of Brazilian zoos in ex situ bird conservation: from 1981 to 2005. Zoo Biology, 30(6), 655-671. https://doi.org/10.1002/zoo.20361

Zoos may play an important role in conservation when they maintain and breed large numbers of animals that are threatened with extinction. Bird conservation is in a privileged situation owing to the extensive biological information available about th... Read More about Role of Brazilian zoos in ex situ bird conservation: from 1981 to 2005.

Time--activity budget of greater rheas (Rhea americana, Aves) on a human-disturbed area: the role of habitat, time of the day, season and group size (2010)
Journal Article
de Azevedo, C., Ferraz, J., Tinoco, H., Young, R., & Rodrigues, M. (2010). Time--activity budget of greater rheas (Rhea americana, Aves) on a human-disturbed area: the role of habitat, time of the day, season and group size. Acta ethologica, 13, 109-117. https://doi.org/10.1007/s10211-010-0080-7

The aim of this study was to evaluate activity–time budget, habitat use and how seasonality and group size influence the expression of greater rhea behaviours. Greater rheas are threatened South American birds; habitat loss, predation and hunting are... Read More about Time--activity budget of greater rheas (Rhea americana, Aves) on a human-disturbed area: the role of habitat, time of the day, season and group size.