Fróðskaparrit - 01.01.2009, Side 100

98
YEAR-ROUND VIDEO SURVEILLANCE OF INDIVIDUAL NEST-SITE
ATTENDANCE OF NORTHERN FULMARS IN THE FAROE ISLANDS
Mean monthly attendance by Fulmars
in 2006
Mean monthly attendance by Fulmars
in 2007
(U
o
c
(0
"O
c
0)
□ One Fulmar
■ Tw o Fulmars
Fig. 1. Mean monthly attendance by one and two Fulmars from January to May 2006 and 2007 in the Faroe Islands.
ber of copulations at site no. 3 than at any
other nest-site in 2006 (p< 0.05). The same
was true for sites nos 2 and 15 compared to
sites nos 11 and 12 (p< 0.05). In most cases
the number of copulations in one day was in
the range of 0-3, with one notable exception
namely at nest no. 3 in 2006 where the birds
mated 12 and 13 times on 15 and 16 April,
respectively, and thereafter not until on 27
and 28 April (four times each day). The low-
est mean number of copulations per day was
recorded in no. 1 (2007), no. 11 (2007) and
no. 12 (2006); with no eggs laid in nos 1 and
12. As to the time of the day no distinct peak
was discernible and copulations occurred
from 02 to 23 hrs, thus not only during day-
light hours.
Pre-laying exodus
The period of relatively low attendance from
late April through much of May, known as
the pre-laying exodus, is presented in some
Nest-site Date Total Copulations Successful Days without Mean no./day (í
1 22 Apr-1 May 2007 8 3 5 1.0 (0.0)
2 15-21 Apr 2006 22 22 1 3.7 (1.6)
2 24-27 Apr 2007 12 12 0 4.0 (1.6)
3 15-28 Apr 2006 34 33 9 8.3 (4.9)
3 24 Apr-1 May 2007 16 15 2 3.0 (1.9)
11 19-21 Apr 2006 4 4 0 2.0 (0.6)
11 20-28 Apr 2007 9 7 3 1.4 (0.5)
12 11-30 Apr 2006 10 7 14 1.4 (0.5)
15 15-30 Apr 2006 31 17 8 2.4 (1.0)
Table 6. Copulations of Northern Fulmars at video surveilled nest-sites in the Faroe Islands, giving total numbers
(attempts and successful copulations), date (first to last copulation), and mean number of copulations per day
with copulation.