Abnormal/Problematic Behavior

Includes stereotypies, self-injurious behavior, hair pulling (alopecia), barbering, feather pecking, tail biting, etc.

Fangmeier, M. L., Burns, A. L., Melfi, V. A. et al. 2020. Foraging enrichment alleviates oral repetitive behaviors in captive red-tailed black cockatoos (Calyptorhynchus banksii). Zoo Biology 39(1), 3-12.

The relationship between inadequate foraging opportunities and the expression of oral repetitive behaviors has been well documented in many production animal species. However, this relationship has been less-well examined in zoo-housed animals, particularly avian species...

Broom, D. M., Johnson, K. G. 2019. Stress and Animal Welfare: Key Issues in the Biology of Humans and Other Animals (2nd ed). Springer, Berlin, Germany.

This is the Second Edition of a well-received book that reflects a fresh, integrated coverage of the concepts and scientific measurement of stress and welfare of animals including humans. This book explains the basic biological...

Burghardt, G. M., Ward, B., Rosscoe, R. 1996. Problem of reptile play: Environmental enrichment and play behavior in a captive Nile soft‐shelled turtle, Trionyx triunguis. Zoo Biology 15(3), 223-238.

Giving captive animals the opportunity to interact with objects in a “playful” manner is often considered a method of environmental enrichment. However, the occurrence of play in nonavian reptiles is controversial and poorly documented. Similarly...

Jung, L., Knierim, U. 2019. Differences between feather pecking and non-feather pecking laying hen flocks regarding their compliance with recommendations for the prevention of feather pecking – A matched concurrent case-control design.

Feather pecking (FP) is a multifactorial problem in all housing systems. Using a case-control design we wanted to determine a set of variables which may be decisive for a flock to become case or control...

Van Horn, R. C., Sutherland-Smith, M., Bracho Sarcos, A. E. et al. 2019. The Andean bear alopecia syndrome may be caused by social housing. Zoo Biology 38(5), 434-441.

The Andean bear alopecia syndrome is a progressive and chronic condition documented in ex situ populations. Recent advances focus on treating symptoms, not preventing future cases. We therefore explored the epidemiology of this syndrome through...

Poirier, C., Oliver, C. J., Castellano Bueno, J. et al. 2019. Pacing behaviour in laboratory macaques is an unreliable indicator of acute stress. Scientific Reports 9, 7476.

Pacing behaviour, the most frequent stereotypic behaviour displayed by laboratory rhesus macaques (Macaca mulatta) is often used as an indicator of stress. In this study, we investigated how reliable this welfare indicator is at detecting...

Morgan, L., Itin-Shwartz, B., Koren, L. et al. 2019. Physiological and economic benefits of abandoning invasive surgical procedures and enhancing animal welfare in swine production. Scientific Reports 9, 16093.

Food-animal welfare is a major ethical and social concern. Pork is the most consumed meat worldwide, with over a billion pigs slaughtered annually. Most of these pigs routinely undergo painful surgical procedures (surgical castration, tail...

Brand, C. M., Marchant, L. F. 2019. Social hair plucking is a grooming convention in a group of captive bonobos (Pan paniscus). Primates 60(6), 487–491.

Hair plucking is observed in many captive primate species and is often characterized as an abnormal behavior. However, this behavior may be both self-directed and social and may have different etiologies. Early research in captive...

Nie, C., Ban, L., Ning, Z. et al. 2019. Feather colour affects the aggressive behaviour of chickens with the same genotype on the dominant white (I) locus. PLOS ONE 14(5), e0215921.

Aggression in chickens is a serious economic and animal welfare issue in poultry farming. Pigmentation traits have been documented to be associated with animal behaviour. Chicken pecking behaviour has been found to be related to...

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