Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
P. DeBeedich
1965
17 June
Colidin fuscicollis
Barrow, Alaska
"prairie chicken" display
The [illegible] lower mandible appears dull red,
always black to me.
18 June Saw an aerial flight display over the low
bounds near the Beach Ridge; the bird got
up in the air silently, flopping apparently
normally and then went into a U glide, calling,
"po-oit po-oit po-it", very low pitched & volume, and
then the bird landed. The same or another bird
was observed feeding consistently near a low dunlin
but the two ignored each other except for keeping
about 6-8 inches apart. Nothing else out of the
ordinary. The bird seen feeding at close range
today was on a low polygon and fed in bone/
morsey areas giving something between a jab and
peck as a feeding motion most of the time.
19 June At least 6 and possibly 8 birds in the 50th
Bitter's Area, most feeding silently. Saw the
end of one aerial display and heard another.
One chase, involving two birds, began with a
rapid flight, one bird (probably the chasing)
calling a long "222 222222222" as it flew;
then it went into a short V-glide calling "222-zit"