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Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
1176
Intelligence of
Spotted Towhee.
As I sat in the cloister at noon having luncheon, a female
spotted towhee alighted in a hibiscus within reach and waited
patiently. She did not want any of the crumbs set out for birds
nearby. This meant that she wanted worms for her brood, as was
proved by her taking them at once when tossed to her, "cphimping"
in her bill, carrying off somewhere, then returning for more.
This was the first time this year that she wanted worms and the
first time in about a year (since last breeding season) that
any spotted towhee has shown any specific interest in me. Last
season this bird (undoubtedly the same one) likewise displayed
sudden interest in me as soon as she had young. (Last year
I verified this by following her to her nest). As long as she was
feeding them, she came to me for worms, wherever she found me.
We have here a case of learning from observation, remembering,
associating cause with effect; more explicitly: a case of
this bird learning that worms could be had from me, remembering
this for a year, putting the knowledge into effect only when great
need for food became a source of concern. This, to my mind,
is intelligent behavior.
Rhody resumes his
calling for mate.
May 1st.
At precisely 7:08 Rhody's cooing song was heard not far away.
He kept it up for about an hour, then it was no longer heard.
At 7:30 his location was seen to be the Scamell's roof. When
the calling stopped I looked for him all about this place, includ-
ing all the nests. He was not to be seen anywhere. About 9
I drove slowly through the territory to the north-east, stopping,
looking and listening frequently, covering four miles, returning
at 10. No results. He was not at any of the nests. Presumably,
therefore, hunting abroad.
At 10:30 he was sitting quietly in 1-36, crying as I approach-
ed, but not resorting to his bluffing nesting activity. Evi-
dently this is under control of his will and perhaps borders upon
an intelligent act, if it is not completely such.
(As I came out of the shop door on my way here to write the
foregoing note, the spotted towhee flew from a tree and landed
at my feet. She is now, 11:30, outside the window waiting for me
to come out).
At 1:30 Rhody was again found in 1-36.
At 3:30 he came into the garden where I was working, cried,
then followed me into the shop-yard for a live mouse. On the
way there he paused below the thrasher nest 6 feet over his head
and seemed disposed to go up and investigate, but did not.
After his usual cavortings, not including the mirror, he went to
nest 1-36 again.
Today, then, it was this nest that received most, if not all,
of his attentions.
May 2nd.
At 6:50 A.M. Rhody was glimpsed on his way up to the roof.
He was down at 7:15, not having called in the meantime. After
10 minutes of sunning, preening and hesitating about going up to
4-36, he picked up a twig and carried it to 1-36.
8:07. Rhody has not been heard to call this morning. Until
10:20 he was not to be found anywhere about the place, but at
that time he was discovered sitting quietly in 1-36. When I
talked to him (from a distance of about 20 feet) he began to
whine and stir in the nest. He then rearranged a few twigs about