Fróðskaparrit - 01.01.2009, Qupperneq 93

í EITT ÁR VÓRÐU REIÐURSTAÐIR HJÁ HAVHESTI (FULMARUS CLACIALIS) f FØROYUM
EYCLEIDDIR VIÐ VAKMYNDATÓLI
91
2005 2006 2007
Nest-site Nest-site Nest-site
1 2 3 6 7 11 12 15 1 2 3 6 7 11 12 15 1 2 3 6 11
Jan. 26 19 21 14 31 31 27 31 31 31 31 31 31
Feb. 26 28 28 19 28 27 9 28 28 28 28 28 28
March 15 13 21 11 31 31 18 31 31 31 31 25 29
April 20 24 26 21 30 30 25 30 30 30 30 30
May 16 31 31 12 31 31 17 31 31 31 31 31
June 21 19 7 26 30 25 17 21 1 28 30 9
July 12 18 31 11 31 11 12 1 10
Aug. 18 22 12 12 7 7 11
Sept. 4 4 6 7 8 7 7 í
Okt. 27 31 31 31 31
Nov. 3 20 17 7 20 14 20 30 30 30 30 30
Dec. 18 31 31 12 31 31 23 31 31 31 31 31 31
Table 1. Number of days with surveillance camera observations at different Northern Fulmar nest-sites in the
Faroe Islands.
species is their need to go in search of ter-
restrial breeding sites, and the fact that the
Northern Fulmar, throughout most of its
breeding range, more or less regularly visit
the colony during 9-10 months of the year,
underlines the significance of having access
to suitable nesting sites. Furthermore, non-
breeding birds that include both sexually
mature individuals known to have bred in
previous years and birds of pre-breeding age
regularly attend the colony and because of
these so-called prospectors, the total num-
ber of fulmars present at the colony is often
higher, even in winter, than the breeding
Population (Fisher and Lockley, 1954; Coul-
son and Florobin, 1972; MacDonald, 1980);
besides, there was no significant monthly
variation in proportions of breeders and
non-breeders (MacDonald, 1980).
Throughout the Boreal zone of the At-
lantic, following a period of post-breeding
absence, the Northern Fulmars typically
begin to attend their breeding colonies in-
termittently from late September to early
December varying between years and
colonies (Fisher, 1952; MacDonald, 1977a,
1980; Mallory and Forbes, 2007). For the
Faroe Islands some information on the post-
breeding departure, length of autumn ab-
sence, and arrival dates of the fulmar is given
by Andersen (see references in Salomonsen,
1935), who published (1899-1905) observa-
tions made by P.F. Petersen and S. Niclassen
from the islands of Nólsoy and Mykines, re-
spectively. For instance, on Nólsoy no sight-
ings of adult fulmars were made between
late September and November and in three
of the years the first birds returned on De-