Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1495
Thrasher "talk".
In connection with this apparent manifestation of the nest-
building instinct the "talk" consisted of low tsips, "churkles",
chuckles, cluckings and other inarticulate sounds, rapidly utter-
ed and of low intensity: audible perhaps 5 or 10 feet. It is im-
possible to describe accurately. It is a pleasant intimate sound
and undoubtedly possesses some significance.
To my ear it is the same "talk" (at present) heard on the
following occasions:
(1). When one bird "offers" the other some delectable morsel
either in earnest or in play.
(2). When one bird finds, and is interested in, a bit of
material suitable for a nest.
(3). When the two birds, meeting casually (I.e. without
apparent design) are disposed to greet each other. At such times
they may also nibble at each others bills and also "talk" silently
with wide open bills, just as Brownie and Greenie frequently did.
(4). When one of the birds, more especially Chiisai when
not hungry, climbs upon my hand or shoulder. (If hungry he usual-
ly yips softly or makes a sibilant, two-syllabled call: one note
followed by another of lower pitch, like Brownie's
Tsee
Poo. ).
Chiisai, almost invariably, if not hungry, "talks" to
me in this way when alighting upon me; Okii is more apt to be silent
on such occasions.
Rhody, during the day, adhered to his standard behavior of
the past few days. In accepting his mouse some discrimination was
shown. The large mouse given him was accepted at once, killed and
then abandoned. He then returned at once to me and stood facing
me patiently. I got him a smaller one, which he gobbled at once.
The other one was "too much something" or "not enough something
else".
August 2nd.
Okii again, for a few minutes in the morning only, showed
his nesting urge. This time he actually carried material of his
own finding and placed it without guidance from me of any sort.
Chiisai seemed disposed to help, though ineffectively.
Rhody performed as usual during the day. His forenoons are
now mostly spent in wandering about the neighborhood foraging and
observing affairs, such as building operations, in the vicinity.
Early in the afternoon he comes to the cage for meat and spends
the rest of the day preening, lying in the sun, and waiting for
the time to come when another mouse is in order. During the last
two or three days he has also renewed his habit of sitting in an
acacia at the north fence that gives him the proper proportion
of sun and shade without requiring him to move from one to the
other. (See last year's notes at this (?) time).
August 3rd
Okii, in the morning, was less interested in nesting, but
Chiisai a little more keen.
Rhody continued present trends: including resting in the
acacia.