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The ecology and management of feral cat colonies. A survey of feral cat colonies in Great Britain and an experimental field study of the effect of neutering on the ecology, behaviour and social organisation of a single colony.

By Paul Anthony Rees

Abstract

A postal questionnaire survey located over 700 feral cat colonies.\ud Most were small well - established and lived in association with man,\ud The feral cat population of Britain was estimated to be one million and\ud is concentrated in urban areas.\ud A domestic cat survey indicated a total population of 5.9 million\ud cats in Britain. There appeared to be more females than males and a\ud higher proportion of females than males were neutered.\ud The effect of neutering on a colony of 30 adult cats. living in the\ud grounds of Winwick Hospital, Cheshire, was examined. Individual cats\ud were recognised by differences in coat colour and pattern, and data were\ud collected by direct observation. The colony was studied for one year\ud before and one year after neutering.\ud Before neutering there appeared to be a seasonal fluctuation in\ud numbers as a result of natality$ mortality and migration. Male immigrants\ud were recorded. After neutering the colony remained stable in size and\ud only one (female) immigrant was observed.\ud The ecology and behaviour of 19 cats were studied in terms of home\ud range, the distribution of, sightings in time, and sociability. Before\ud neutering cluster analysis was used to identify groups of similar cats:\ud males$ femalesp nomads and residents, After neutering no such groups could\ud be distinguished and it is suggested that this was a result of changes\ud in hormone balance.\ud A mathematical model was developed for the study of associations\ud within populations. It was shown that the cats tended to form more\ud discrete social groups after neutering with fewer movements between\ud groups.\ud The adult cats were generally in good condition but there was\ud evidence of exposure to feline calicivirus and feline herpesvirus.\ud Trapping of cats appeared to be efficient and humane, and neutering\ud was considered to be an acceptable form of population management.Royal Society for the\ud Prevention of Cruelty to Animals. The Feral Cat Working Party

Topics: Feral cat populations, Great Britain, feral cat populations, Urban areas, wildlife, Neutering, Hospital grounds, wildlife
Publisher: Postgraduate School of Studies in Environmental Science
Year: 1982
OAI identifier: oai:bradscholars.brad.ac.uk:10454/4221
Provided by: Bradford Scholars

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