Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Holmes,R
1963
C. canatus
14 June Opotruk Creek, Cape Thompson, Alaska
displays were heard from the bird very
irregularly. Each time - from different
direction - so that he seemed to be
flying long distances (undetected by us
for the most part) - at least half to
one quarter of a mile. No other birds
were seen this morning.
On one flight - when the bird flew
down the steep slope - he was flying
rapidly & given the song at the same
time - so that it is not given for
a bird circling, I mean. Actually,
mostly the songs heard seemed to
have come from birds in swift flight -
low over the ground. On 2 or 3 occasions,
the birds flew several hundred feet off
the ground, with a slower beat as
they swept to the left, then swiftly off - out of
sight. The song was heard from the bird
down the left flight. [Summary]
flight display - low & slow - repeated
beats - wing sweeps - wing beats -
low above the ground - a slower
warp - but no hovering - a general
warp as it appears, etc. - song not
given.