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Title: Home range and territory of woodland wrens (Troglodytes troglodytes troglodytes Linn.) in spring and summer
Author: Kentish, Barry J.
ISNI:       0000 0004 2751 0852
Awarding Body: Durham University
Current Institution: Durham University
Date of Award: 1976
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In this dissertation I shall describe a study of some aspects of territoriality in the Wren (Troglodytes troglodytes troglodytes Linn.) and the efficiency of song as a means of ensuring. exclusive use of a specific site. To aid understanding of the functions of territoriality in this species, feeding and song behaviour have been investigated, as also have possible mechanisms to reduce competition within the species and between the sexes, Information on breeding biology was also collected to attempt ·to relate this to territory size, The British population of the Wren has been steadily increasing since the severe winter of' 1962-63 when abnormally cold conditions drastically reduced numbers. Indeed the Wren is now considered as one of the more common resident birds (Batten 1973; Batten and Marchant 1975;1976). In the last 5-6 years maintenance of high populations of smaller birds, such as the . Goldcrest (Regulus regulus Linn,) and the Wren has been associated with a series of mild winters. It would appear from. this that the winter climate exerts ·a strong, though probably indirect, influence . upon the number of Wrens. The milder conditions have not led to such marked increases in numbers of larger birds such as the Blackbird (Turdus merula Linn.). It is thought that the territorial behaviour is the limiting factor to the maximum breeding density (Batten and Marchant 1976). However, the male Wren is claimed to be strongly territorial and to defend a specific site by song (Armstrong 1955}. Although Wrens have been known to sing at a!ll times of the year song output increases during the breeding season (Colquhoun 1940; Armstrong 1944; Cox 1944; Clark 1949).
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available