The birds ringed in these colonies constitute more than 80% of the total number of Brunnich's guillemot ringed in Svalbard.
The distribution and diel movement of Brunnich's guillemot Uria lomvia in ice covered waters in the Barents Sea, February/March 1987.
We mapped wintering areas and estimated the recovery rates of Brunnich's guillemots (thick-billed murres) ringed in Svalbard during 1954-98.
Many gaps exist in current knowledge of the migration routes and the wintering areas of Brunnich's guillemots breeding in the Northeast Atlantic.
An intensive hunt of seabirds occurs in Greenland and Newfoundland in winter, and about 900 000-1 200 000 Brunnich's guillemots are shot in these areas annually (Elliot, 1991; Falk and Durinck, 1992).
We present current knowledge, based on ringing recoveries, of the wintering areas and recovery rates of Brunnich's guillemots ringed in Svalbard.
At Coats Island (62[degrees]57'N, 82[degrees]00'W), Brunnich's guillemots breed on two cliffs separated by about 1.5 km (Gaston et al.
More than 90% of all recoveries of Brunnich's guillemots ringed at Coats Island came from Newfoundland and Labrador, of which more than 95% were shot (Donaldson et al.
The decline in recovery rates of Coats Island Brunnich's guillemots over the past two decades could be due to a decline in reporting rates.
The population of Brunnich's guillemots breeding in the eastern Canadian Arctic is thought to have expanded somewhat since the 1970s (Gaston 2002b), potentially causing dilution of the ringed birds.
As described above, populations of Brunnich's guillemots are stable or growing (Gaston 2002a, A.J.