The migration seasons of birds as recorded at Dungeness Bird Observatory in southeast England
Newton, Ian; Ekner, Anna; Walker, David; Sparks, Tim H.. 2010 The migration seasons of birds as recorded at Dungeness Bird Observatory in southeast England. Ringing & Migration, 25. 71-87.Full text not available from this repository.
This paper summarises the migration periods of birds at Dungeness Bird Observatory, Kent, southeast England, as calculated from daily counts conducted over an 18-year period. Mean spring migration dates for different species ranged between 6 February (Greenfinch Carduelis chloris) and 26 May (Reed Warbler Acrocephalus scirpaceus), and mean late summer/autumn dates between 11 August (Reed Warbler) and 27 November (Great Crested Grebe Podiceps cristatus). In general, species which arrived early in spring tended to depart late in autumn and vice versa. The overall average spring passage date for all species was 9 April and the overall autumn date 3 October. Long-distance migrants, wintering in sub-Saharan Africa, tended to arrive later and depart earlier, spending a shorter period in Britain than short-distance migrants wintering within Europe. Although the population levels of birds are higher in autumn than in spring, in some species the spring totals at Dungeness far exceeded their autumn totals. The annual cycles of the birds passing through Dungeness, as reflected in their migration dates, were centred not on the longest day, nor on the warmest, but roughly midway between the two.
|Programmes:||CEH Topics & Objectives 2009 onwards > Biodiversity > BD Topic 1 - Observations, Patterns, and Predictions for Biodiversity|
|CEH Sections:||CEH fellows|
|Additional Information:||To access full text, please click on the OFFICIAL URL link|
|Date made live:||16 Feb 2011 11:52|
Actions (login required)