Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
lison
49
Fulica americana
-62-
July 12 Jewel Lake, Tilden Park Contra Costa Co., Calif.
Zeiss 8x glasses loaned to me, every
Tag on all the birds in sight - the
furtherest having been G/B (the most
difficult) at G/5. 12.] Now all tho
immatures + S adults seem to be ni F+G8.
there are at least 10 birds visible there
at the moment. G/B + G/S, both of N Wood
look very much like adults today except
for the dull bill - the head color is
fully as dark as that of an adult.
Side by side with an adult - I guess
G/B is not so a adult looking at all -
The general body color + proportions
are those of an adult but the head
is still much too light. And G/5 looks
even less like an adult. The birds
still with the light gray on their
balds are G/S, G, R/B just a little. R is
much like G/B, two + two + the
unmasked birds. Obviously immature
but with dark head are 2 unmarked
birds Y.
Just now G/B just
chased Y a few feet in area G/7.3.
I have seen no signs of antagonism
canued by the presence of dangles as
yet - nor have I seen any evident
attempts to remove them by either
pecking at them or by scratching at
them with their feet. - At 5:30 pm.
B crossed from K28 to L25 with
four of her new brood - they are
very colorful around the head but
apparently have lost all the plumages from
the body - instead there appears to be.