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Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
up at them, they came down and wandered about, then retired to the
June 13th. At 6:45 A.M. there was no sign of the parents in the
young
glade, but I could see one of the thrashers in the bushes. I
produced soft food and all three of the young came to get it as it
was offered to them on the spatula. Two were a little shy, but the
other one was quite forward. Neither parent appeared during this
feeding operation. When it was finished, the young retired and I
heard a low, husky warbling song suggestive of the thrasher under-
song. Investigation disclosed one of the young thrashers about
8 feet away in the bushes as the musician! This at one month from
the egg! He was very intent on his song and introduced variations
like a professional, although the caliber of his performance was,
naturally, not of high order. He sang with closed bill, but with
distinct throat swellings. If this precociousness is indicative of
what may be expected of him in the future, he should become a great
singer.
9:15. For the last two hours Brownie has sung almost continuously
and is still singing. I have never before heard such a variety of
sounds from any one bird. Besides her own thrasher melody she introduced
at intervals the linnet, robin, flicker, California Jay and, although
I am not quite certain, I think the Steller Jay. All of the intro-
ductions, except the linnet's, were very much softened, the linnet's
was much louder. Her own music consisted of an astonishing variety
of phrases and, while these were often repeated, there was constant
and ingenious
insertion of new phrases. This occurred so often and so unexpectedly
that one could not help laughing at each new turn. I do not know
the occasion for all this, unless it be that family cares have become
much reduced through simplification of commissary operations, thus