Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Fulica americana
-17-
Apr 30 Jewel Lake, Tilden Park, Contra Costa Co, Calif-
A bird incubating at C 12.13 at 11:40 a.m.
At 11:50 a.m. the last egg -1- in nest
B26.6 was sorta cool but the bird
inside is still alive. It is pretty
well pipped, but it helped it along. Want
to get the close sight. Very tip of bill
black, nib to naves orange-red, naves
to head, deep blood red. There are
short bead-like orange structures
around the upper base of the bill.
Bill comes out under right wing. The
orange is a club shaped affair on a
stalk on either side of the bill in
front of the eyes. The skin above the
eyes is blue. Feet are kind of a
colorless greenish, body dorsal body
surface covered with long black down,
1/2 its length orange, wings the same.
A 1 mm. claw on each alula. Wings
also with orange tipped black down.
Black down on undersurface only
slightly tipped with yellows.
Bill from one nases, 5 mm.
nid-toe 25mm. Tarsus 20 mm.
Hallas 8.5 mm. tip of bill from
top of frontal shield 14.75 mm.
Frontal shield color continuous with
that around naves. Egg tooth with
white tip, above black.
egg tool
No orange down on top of head, starts
down on nape. In 10 minutes the