Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
singing.
About 9 the first thrasher seen was Nb, who came from the chaparral
outside the fence without being solicited, for worms. A new phase in
his behavior was his gathering up worms in his bill, then putting them
on the ground and preparing them, then picking them up again and
running off toward the bushes making the "blue-bird" approach call,
just as if he were an adult bird feeding young.
Shortly afterwards the place was again "full" of thrashers.
2:30 P.M. The immediately following observations cover unusual
and in some instances, unprecedented behavior here:
Just before noon B jumped to my knee in the glade, now beginning to
look fairly respectable. (I.e B is).
Bb came and scolded with open bill when he saw B, but hung about.
B would not let me give Bb any worms at first, or rather he would
grab them all, but finally retired to a point behind me where he
sang continuously for several minutes and permitted Bb to get all
the worms.
Bb then climbed the old oak and entered nest 6 (the first one of
this year). There he worked on displaced twigs and lining and
removed oak leaves, then lay down in the nest. 20 Minutes later
when I left he was still there and B was still singing undersong
from a point where he could see everything in the glade.
I returned at 1:15, at which time Brownie himself was sitting
on the nest, Bb on the ground. Both came to me for food and I
was able to supply both, there being no chasing.
At 1:38 Brownie returned to the nest and lay down in it. He did
not leave it until 2:12, nearly three quarters of an hour occupancy
At 1:45 he began to sing in the nest, sub-song.
At 1:50 Nova, much to my surprise, entered the glade quite
fearlessly and went up to the nest. B greeted her with the Russet
backed thrush song, turned and faced her and she came down into
the glade, where she dug, preened and sunned in the open before me.
Bb was a little worried about her at first, assuming an attitude
of defense, but the worst she did was to appropriate for her own
use three of the holes which he had dug, ejecting him in the pro-
cess.
Nova was shortly joined by another thrasher (Nb) and both
wandered away.
Bb hung about me all the time, digging and sunning and hoping
that I had more worms. When a chipping sparrow that had been
drying himself on a branch nearby flew over his head, Bb followed
on foot and tried to catch him.
About 2:05 Brownie began to dig in the bottom of the nest with
regular thrasher side-sweeps and piled the lining up about the rim
and over himself, so that he appeared as if immersed in a kind of
haze. At 2:12 he came to me, but I had nothing for him.
I neglected to record that Bb spent another period (5 minutes
this time) in the nest, a few minutes before Brownie entered.