Abnormal/Problematic Behavior

Some observations on the development of feather pecking in poultry

Feather pecking occurs much more often when chicken are kept on wire floor rather then litter which allows the hens to peck up additional food particles. It is argued that feather pecking in the absence of a suitable litter substrate...

Year Published: 1984Topics: Abnormal/Problematic BehaviorAnimal Type: Bird, Chicken

Citation: Blokhuis, H. J., Arkes, J. G. 1984. Some observations on the development of feather pecking in poultry. Applied Animal Behaviour Science 12, 145-157.

Abnormal behavior in laboratory-reared rhesus monkeys

Thus, even after extensive social experience, early stimulus deprivation produced animals that failed to perform normally as adults.

Year Published: 1986Topics: Abnormal/Problematic BehaviorAnimal Type: Macaque, Nonhuman Primate

Citation: Sackett, G. P. 1986. Abnormal behavior in laboratory-reared rhesus monkeys. In: Abnormal Behavior of Animals. Fox, M. W. (ed), 293-331. Saunders, Philadelphia, PA.

The development of pathological behaviors in chimpanzees in a physically and socially restricted environment and responsiveness to enrichment

Year Published: 1988Topics: Abnormal/Problematic Behavior, Environmental Enrichment, Social Housing & CompanionshipAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Brent, L., Lee, D. R., Eichberg, J. W. 1988. The development of pathological behaviors in chimpanzees in a physically and socially restricted environment and responsiveness to enrichment. American Journal of Primatology 14, 413 (Abstract).

Long-term effects of a natural foraging task on aggression and stereotypies in socially housed pigtail macaques

A supplementary feeding of approximately one cup of sunflower seeds were dispersed throughout the cage in the woodchip bedding in the middle of the afternoons, 4-6 hours after the group was fed their daily ration of chow and fruit. ......

Year Published: 1989Topics: Abnormal/Problematic Behavior, Environmental EnrichmentAnimal Type: Macaque, Nonhuman Primate

Citation: Boccia, M. L. 1989. Long-term effects of a natural foraging task on aggression and stereotypies in socially housed pigtail macaques. Laboratory Primate Newsletter 28(2), 18-19.

Environmental enrichment and its effects on the individual

In macaques and baboons, stereotypy is reduced or stopped by supplying "one or more perches ... and other cage furniture", especially "a woodchip substrate which includes food items ... as provisioned substrate for foraging"

Year Published: 1989Topics: Abnormal/Problematic Behavior, Environmental EnrichmentAnimal Type: Baboon, Macaque, Nonhuman Primate

Citation: Harris, D. H. R. 1989. Environmental enrichment and its effects on the individual. In: Laboratory Animal Welfare Research - Primates. UFAW [Universities Federation for Animal Welfare] (ed), 15-16. UFAW, Potters Bar, UK.

Environmental influences on the development of behaviour and their relation to welfare

Environmental enrichment can decrease fear responses to people and reduce feather pecking.

Year Published: 1989Topics: Abnormal/Problematic Behavior, Environmental EnrichmentAnimal Type: Bird, Chicken

Citation: Vestergaard, K. S. 1989. Environmental influences on the development of behaviour and their relation to welfare. In: Proceedings of the European Symposium on Poultry Welfare. Faure, J. M. , Mills, A. D. (eds), 109-122. World's Poultry Science Association, Tours, France.

Woodchip bedding as enrichment for captive chimpanzees

Abnormal behavior and environmental manipulation were significantly lower during the woodchip [not mixed with food] condition.

Year Published: 1991Topics: Abnormal/Problematic Behavior, Environmental EnrichmentAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Brent, L., Eichberg, J. W. 1991. Woodchip bedding as enrichment for captive chimpanzees. American Journal of Primatology 24, 91-92.

Social housing ameliorates behavioral pathology in Cebus apella

No specific enrichment devices were included in the [single-] cages. The seven subjects' mean percentage of occurrence of stereotypic behaviors was 13%.Change from single- to group-housing effectively reduced stereotypic behaviors; however, it also was associated with more passive behaviors being...

Year Published: 1991Topics: Abnormal/Problematic Behavior, Social Housing & CompanionshipAnimal Type: Capuchin, Nonhuman Primate

Citation: Bayne, K., Dexter, S. L., Suomi, S. J. 1991. Social housing ameliorates behavioral pathology in Cebus apella. Laboratory Primate Newsletter 30(2), 9-12.

Reducing feather pecking in laying hens by behavioural methods

The provision of straw encouraged pecking and reduced feather pecking among hens.

Year Published: 1991Topics: Abnormal/Problematic Behavior, Environmental EnrichmentAnimal Type: Bird, Chicken

Citation: Norgaard-Nielsen, G. 1991. Reducing feather pecking in laying hens by behavioural methods. In: Applied Animal Behaviour: Past, Present and Future. Appleby, M. C., Horrell, R. I., Petherick, J. C., Rutter, S. M. (eds), 79. The Universities Federation for Animal Welfare, Potters Bar, UK.

Ecological aspects of chicken husbandry – Interaction between environmental condition, behavioural activity of hens and quality of deep litter

Under low light conditions behaviour activity decreases but feather pecking increases strongly. Feather pecking therefore can be interpreted as a deficiency in light stimuli for the initiation of normal behaviour patterns in a deep litter system.

Year Published: 1991Topics: Abnormal/Problematic Behavior, Husbandry & ManagementAnimal Type: Bird, Chicken

Citation: Martin, G. 1991. Ecological aspects of chicken husbandry - Interaction between environmental condition, behavioural activity of hens and quality of deep litter. In: Alternatives in Animal Husbandry. Boehnke, E. , Mokenthin, V. (eds), 87-94. University of Kassel, Witzenhausen, Germany.