Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
P. De Bensdolte
1965
Stercorarius pomarinus
June 8
Barrow, Alaska - almost all the
birds seen today were well within the area by
the old AFB radar installation remains. Most of the
rest of the area is snow covered and scattered jaegers
were seen sitting in the snow or behind the few tufts of
soil present; a few flying low over the tundra, not more
than 10 birds away from the AFB area. In the AFB are
counted 23 birds in sight at once but I believe at
least 10-15 more were present as there were at least
6 and probably 8 pairs of territorial birds in the area.
Aerial fights were not common feet were seen regularly,
and the wing up display was given by many birds on the
ground as other flew over. Saw very little V-flying. Only
one food chase and several of the birds were sitting on the ground.
As we approached one Snowy Owl nest, the 3 flushed at
about 30 feet distance. Immediately 3-5 jaegers
descended on the nest and began to peck at the eggs,
obviously eating the egg contents. At one time there
were 3 jaegers at the nest, a 4th hovering over and a Glaucous
Gull (which never got anything) nearby with at least 700-900
birds eventually got some egg material. 3 whole eggs were
carried off (after they had been broken) and an additional
large piece of shell was carried out of the nest, leaving 500 eggs
behind. Dr. Pitselka and I stood 12-15 feet from the
nest at one time and 3 jaegers landed nervously +
repeatedly by the nest but would not get into it. After
we left they returned only slowly to the nest area
and did not appear to get any additional eggs;
AFB = VOTH