Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
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May 27th. It is the mov\ue camera that frightens the birds, even when
the camera is not in action. About 9 A.M. I set up a moving picture
camera with remote control near a currant bush at the berry patch and
then enticed Brown-eyes, after much coaxing, into the field of view
for an instant. (Distance about 9 feet, 1" lens. diaphragm f-5.6)
I do not know whether I got her or not, if so it was only a flash,
as she was very camera-shy. I moved the camera into the glade, Brown-
eyes insisted in keeping behind me and then very timidly, although I
had the camera concealed as much as possible by oak branches. To my
surprise, Green-eyes was less afraid than his mate and he came for worms
pausing for an instant on a stone at my feet which I had placed as
a take-off for the birds. He left quickly but I do not think it was
the noise of the camera, as he probably would not have stayed long
any way. When I went outside the glade, leaving the camera behind,
both birds came running to me without being called and Brown-eyes
jumped up into my hand without hesitation and carried worms to the
nest. When I went to the nest and offered moistened soft food, she
ate it from the spoon. When she would take no more, I offered it to
the nestlings, but each time Brown-eyes would reach forward and take
the food herself, but only when it was offered, not to her, but to
the young. It seemed as if she did not want them to have this food.
As these notes show, on first making the experiment, the both adults
fed the young with food from the spoon. Since that time they have
not done so, although they continue to take worms from my hand, while
at the nest, and feed the young. This morning for the first time one
of the nestlings shrank from me when I touched it.
12:45 Still unsuccessful in getting the birds to pose, though B.E.
made a momentary appearance in the field of view, getting one worm.
It is very hot in the glade and all of the thrashers, including the
nestlings, have their bills open to cool off. The nest is so located