Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
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he was doubtful about, but finally picked it up and held it in his
bill for perhaps a minute while he looked all around and made the
clucking call which the parents make when trying to get the attention
of a young bird while standing over it in the nest. Finally, as there
was nobody to take the worm from him and give it back to him, he had
to answer his own call by swallowing the worm himself. Here were
characteristic actions of parent and young all mixed up together!
About 5:30, Brownie and Greenie both being engaged in digging
outside the glade, but in plain view, an elementary thrasher under-
place to which
song was heard from the bushes at a point where Snooty had just gone,
probably about ten feet away. I could not see him, but think this
was an effort of his. He has now been out of the nest about 17 days
and is approximately the same age as that of the young thrashers of
they were
Brood No.1 when it was first heard to sing. He would be very easy
to tame--in fact would tame himself--if the parents would permit.
August 4th.
8:20 A.M. Greenie was feeding Snooty at the oval lawn.
About 5 minutes after entering the glade Brownie arrived looking
remaining
pretty disreputable. She has about 4 long feathers in her tail and
the new ones at the base are now showing fan-shaped vanes at the ends.
They look like small, flat paint brushes with quill stems. Her wing
covers are coming along fast. Her body feathers are very much dishev-
ed with lots of thin places. When she preens light feathers float
off in the air. Although she looks glum and disconsolate she remains
friendly. Greenie is also rough looking, but not so far gone as
his mate. He is very faithful to his charge, still doing all the
his
feeding, which as these notes show is a reversal of behavior toward
the first brood at the same stage of development. Whichever adult
sun
clear
is the male or the female, it will be clear that there is no evidence
pointing to any differences in the attitude of the sexes toward the
young, when both broods are taken into consideration, owing to this