Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
new phrase which sounded like "Wheat-wheat------ta-taw" repeated
twice. Rising inflection on the first and falling on the last, the
singing
first syllables of higher pitch than the last. This lasted for about
15 minutes more.
I did not begin to look up the family until about 10 o'clock.
Greenie was found all by himself at the glade and very friendly. For
the first time I had an opportunity of checking up on his undersong
at close range as he practiced it a few feet from me in the open. It
differs little from Brownie's, though for the present at least, it
is not so varied, i.e. contains fewer imitations. Its general tenor
and quality are the same.
Brownie and Snooty were not to be seen, so I placed my chair at
the edge of the oval lawn and waited. In two or three minutes Snooty
sailed down from the upper garden (I was delighted to learn that his
interest in that section continues) passed about three feet by my
ear and landed like a rubber ball in front of me sleek and full of
vitality. He jumped to my hand for worms, sailing off after each one
with a vigorous push to arrange it properly for swallowing. During
this operation he started his undersong, then retired to the shrubbery
about 25 feet away to continue his vocal exercises. These were so
good that after about ten minutes (as I could not see him) it seemed
desirable to find Brownie and make certain that she had not stolen
in unseen; so I went to the glade, after inspecting the vicinity of
the singer, and found both Brownie and Greenie there digging near
each other placidly. They came to hand alternately neither showing
any disposition to interfere with the other's actions. As a further
check I went back to the oval lawn and found Snooty still recording.
pitched
His song is mostly a low, varied warble with no harsh tones and no
imitations. He evidently has ambitions for the future.
Of the six thrashers here that have reached the age of independ-