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Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
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Her "conversation" this time consisted mostly of: "Pit-yourki-
pit-yourki". Sometimes it is: "Beevoor, beevoor, repeat-repeat."
at others: "Wheeo-wheat" and "Whit-you-whit-you". Of course it
is impossible to represent these sounds at all accurately. There
are many other conversational sounds made that cannot even be
other
approximated in writing. I do not know of any native bird that
has the variety of "small talk" of these thrashers. This talk
is also sometimes mixed with imitations of the California Jay,
the Flicker, the Robin and the Sparrow Hawk. By "talk" I do not
mean either the undersong or the full song. It is very low
and I usually hear it when they are playing about me or taking
food from me. Some of it is undoubtedly intended for me and
some for each other, when together. Their loud calls are
different again and usually consist of the opening phrase or two
of full song. The undersong is a miniature full song, sung
with beak closed, but even it does not contain all of the variety
and richness of full song. The latter, when heard, say ten
feet away, contains an astonishing variety of sounds which are
absolutely missing when from the song as heard at a moderate
distance, say 100 feet. These give the nearby song an entirely
and more embellished
different character, much richer than the distant song, which is
fragmentary in comparison.
May 3rd. At 7:20 Brown-eyes was on the nest, Green-eyes in the
north-east corner digging. This is evidently the preliminary
"thinking" period at the nest. Green-eyes ate worms, but he
is still shy and needs a lot of coxing. He did not take them
from my hand so I tossed them to him 2 or 3 feet away. The
difference of eye color is very pronounced.
At 9:20 I was thinning out the peaches in the "orchard" when I
heard a thrasher call in the vicinity of the nest. I assumed
that Brown-eyes was off duty and that, if she knew where I was,
such as meaning, whining, "Yurubbing", Trilling and warbling