Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
tative.
The question naturally arises: What was Brownie's object in all of
this singing and calling, and why didn't he "do something about it"
when he got them all together?
Note: It should have been recorded that I looked for the two
youngsters in other places while the three birds were singing and
could not find them, thus favoring the probability of one of them
having been one of the singers.
8:30 P.M. I was busy most of the day building an extension to
the cage to permit of separating Rhody and the magpies. This is
about 50 feet from the dormitory tree and Brownie frequently was
either seen or heard in his night roost there, sometimes for long
periods of time.
At about 4:45 he began calling and singing full song from the
old oak and thrasher sounds could be heard all about. I did not
stop to look them up until about 5:45, at which time I noted 3 thrash
digging and playing about 50 feet east of me, and another about 10
feet south of them. I approached the group of 3 and suggested worms.
2 birds detached themselves and ram toward me. The first was Bb; the
second was Brownie, but he eventually won to the disappointment of
Bb who stopped in his tracks and complained sadly. B wanted only 2
or 3 worms, as he was interested in something in the old oak, and
when he left Bb came readily and ate out of my hand, but kept looking
to see if B would return. The other two birds, probably Nova and
Nb, continued digging phlegmatically and Bb rejoined them.
The initial split in the family has, apparently disappeared,
and both parents, contrary to precedent, tolerate the presence of
the youngsters, not only in their territory, but in their immediate
presence. Furthermore B seems actually to call them together, al-
though he ignores them almost completely when they appear. This
looks as if he really likes to have them about, knowing that he