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Some abnormal behaviours may be related to environmental conditions (e.g. captive housing) whereas others may be due to medical conditions. The list does not include behaviours in animals that are genetically modified to express abnormal behaviour (e.g. reeler mice). A polar bear performing stereotyped pacing.
Rather than refer to the behaviour as abnormal, it has been suggested that it be described as "behaviour indicative of an abnormal environment". [6] Stereotyped behaviour can also refer to normal behaviours that show low variation. For example, mammalian chewing cycles or fish capturing prey using suction feeding.
Penguins have been observed to engage in homosexual behaviour since at least as early as 1911. George Murray Levick, who documented this behaviour in Adélie penguins at Cape Adare, described it as "depraved". The report was considered too shocking for public release at the time, and was suppressed.
When supply is truly scarce, Adélie penguins are known to engage in a form of prostitution. This behavior was first observed in 1998 by researchers from the University of Cambridge and the ...
Abnormal behavior of birds in captivity has been found to occur among both domesticated and wild birds. [1] Abnormal behavior can be defined in several ways. Statistically, 'abnormal' is when the occurrence, frequency or intensity of a behaviour varies statistically significantly , either more or less, from the normal value. [ 2 ]
The publication, titled The Secret Ingredient, follows two penguins named Pringle and Finn on their journey to deliver birthday cakes to their "colorful animal friends," per the book synopsis, who ...
Stereotypies are repetitive, sometimes abnormal behaviors like pacing on the perch for birds. There are adaptive stereotypic behaviors such as grooming in cats and preening in birds. Captive parrots commonly perform a range of stereotypies. These behaviors are repeated identically and lack any function or goal.
To date, this has been the only study of the Cape Adare rookery, the largest Adélie penguin colony in the world, and he has been the only one to spend an entire breeding cycle there. [3] His observations of the courting, mating, and chick-rearing behaviours of these birds are recorded in his book Antarctic Penguins. [4]