Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
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These birds will never abandon a lost worm without having first
search
made a thorough for it, even when they know there are plenty more right at hand. Thus Brown-eyes when, standing on my hand,
will often jump down to the ground to get a worm accidentally
dropped and then return to my hand for more. At other times
she will mark the location of the dropped worm and either get it
on her way to the nest or the first thing on her return. A
worm that has been unsuccessfully searched for and apparently
definitely abandoned will often be looked for again several
minutes after it was lost in the first place. In this way, they
lose practically no worms. As previously noted, also, they will
pick up the crumbs of soft food dropped while eating from my
hand even though there is still a plentiful supply remaining in
it.
Cain
About 11:15 Mr. Kane came to take movies of the thrashers.
Brown-eyes was very much disturbed by the presence of so many
people in the glade (four, including myself) and did not
want to come out of the brush, while with Mr. Kane, a few
minutes before, as the sole witness besides myself, she
was hardly nervous at all. She finally came out but preferred
to keep me between the camera and herself and when she did
came was very fearful of the noise made by the camera, retreating,
without getting all the worms she needed. Also as the camera
was just below the nest, she was fearful of going up to feed the
young, but finally did so and stayed there. When Mr. Kane
mounted the ladder and parted the branches to get a shot of
her on the nest, she was still more frightened and when he reflected light on her she fled in panic, to return to the tree, however
where she showed the greatest anxiety for her brood. All her
actions were in marked contrast with her actions when she is
perfectly easy with me alone. All the little nuances of
behavior were missing. An hour or so afterwards I went out alone,