Abstract
The visit of Common Murres (Uria aalge) to breeding sites were documented in each October 1982-1987. Individually-marked birds almost invariably returned to
their own breeding sites. There was no evidence that immatures, or adults from other colonies, visited the colony. The most frequently occupied sites were
those which had been successful the previous season. The numbers of visits to sites increased with increasing numbers of neighbors and were higher for sites
in the center of the cliff than for sites at the top and bottom. Blocking sites for 4 months did not prevent birds breeding in the next season. Fall colony
visiting could be explained by (a) competition for the best sites, or (b) birds returning to maintain the pair bond.
http://elibrary.unm.edu/sora/Condor/files/issues/v091n01/p0139-p0146.pdf
Notes
Local copy
Duplicated see also bjfbaadg.htm
Links at this site
- Common Guillemot (Uria aalge)
Harris, M.P.,
Wanless, S.
- Isle of May
- North Sea
- Autumn attendance of Common Guillemots on Lundy in 2008
Common Guillemots disperse to sea after breeding where they become flightless during
their pre-basic moult (Birkhead & Taylor 1977). Breeding birds at the south of their
European range make brief visits to their breeding ledges from October onwards
(Harris & Wanless 1990). Autumn records on Lundy are sparse, and some reports do not
record whether birds were seen at sea or on land. This survey found Guillemots on
ledges at Jenny's Cove on 27th October 2008, 11 days earlier than previous
records (Davis & Jones 2007).
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