In 1954-98, a total of 11 145 Brunnich's guillemots were ringed in colonies in Svalbard (Table 1).
We analyzed the spatial distribution of recovered birds ringed in Svalbard and compared these birds to recovered Brunnich's guillemots ringed elsewhere in the North Atlantic.
By May 1999, 203 recoveries from the 11 145 Brunnich's guillemots ringed in Svalbard had been reported to the Norwegian Ringing Centre.
The distribution of winter (October-March) recoveries (immatures and adults) of Brunnich's guillemots ringed in Svalbard and in other northern Atlantic colonies (Fig.
Since the reporting of ringed birds is dependent on human presence, Brunnich's guillemots staying offshore or in coastal areas outside the hunting zones have a minimal possibility of being found and reported.
An unknown proportion of the Brunnich's guillemots ringed in Svalbard migrates southwest in the autumn and spends the winter close to Iceland, Greenland, and Newfoundland.
Brunnich's guillemots occur offshore and in coastal waters in the Barents Sea outside the breeding season (Barrett, 1979; Anker-Nilssen, 1988; Bakken, 1990; Erikstad, 1990; Isaksen, 1995; Mehlum and Isaksen, 1995; Hunt et al.
In conclusion, the tendency for immature Brunnich's guillemots ringed in Svalbard to disperse earlier and farther in winter than the older birds is similar to that observed for birds ringed in Canada (Gaston, 1980; Donaldson et al.
We are grateful to the ringing centres in the United States, Canada, Iceland, Greenland, Russia (Kandalaksha State Nature Reserve), and Norway for access to the data on recovery of Brunnich's guillemots in the North Atlantic.
Movements of common Uria aalge and Brunnich's guillemots U.
Changes in the number of birds shot by hunters and, to a lesser extent, changes in the size of the total population, probably contributed to the steep decline in recovery rates for Coats Island Brunnich's guillemots in Newfoundland over the past two decades.
1988: Migration and winter ranges of Brunnich's Guillemots Uria lomvia breeding or occurring in Greenland.