Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
FIELD NOTES
DOUG BELL
DATE: JUNE 8, 1985
LOCATION: Port of Olympia, Olympia, WA.
TIME: 13:00 --
Spent first few hours finishing birds and getting
caught up on correspondence, field notes.
TIME: 17:00 - set trap out over 3 egg clutch in dredge-spill
18:00
field between log stacks and marina. Gulls alarmed at
my approach. Settled back down - but they are cautious.
Most birds just standing around, not even desperate to
sit on nests. Very warm (70's), sunny. Paired birds showing
choke displays, food begging & transfers (one seen - shrimp?).
Two males squared off with uprights, whereupon an
incubating female jumped off her nest and ran over to her
mate - giving beg call & head toss. Males broke off, went to
respective mates. Both mates gave begging calls & movements.
(Group stimulation). Two other males seen fighting. Actual
bill to bill grappling with wing beatings and foot pushing
and kicking. Each bird tried to grab and subdue to the
other's bill. One bird had the upper hand and seemed to
hold the other's bill, sometimes the head, almost the whole
time. The underdog kept trying to jump up, hit back
with wings and push off with feet. If he did occasss?
occasionally get his opponents bill, it was not for
more than a few seconds. But he kept trying. The two
birds were locked bill to bill for over 4 min. Underdog
finally broke away and flew off, with pursuer. Winner
ret circled, returned to spot. No real after reactions, other
than erect standing and looking around. Looser may have also
returned.
An imm. Red-Tail flew over colony. Great