Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
April 24th.
9:40 A.M. Unless Rhody knows something that I do not, such,
for instance, as where he can pick up a mate any time he feels like
it, or that his attractive powers are such that no effort on his
part is necessary to cause one to come to him voluntarily wherever
he may be, present indications are that, as in the case of the
Carthaginians at Capua, the luxuries of an easy life are insidiously
sapping his ambitions and he no longer has the pep to take the
field aggressively. While he still continues to perform his
courting actions, he no longer captures his own mice, lizards, etc.
as love-tokens.(He wants them handed to him). Perhaps worst of
all is his substitution of Hamburger steak from a dish for wild
game captured in the fields on his own resource and initiative.
In this respect, of course, my influence has been bad, but I would
like to see him do something for himself like a man-roadrunner.
About 8:30 he was going through his evolutions at the mirror
with Hamburger. At 9:05 he accepted gratefully a young white rat,
which he proffered to his image. (He is becoming a Geococcyxice-
morphist!). After a few wanderings, never more than 30 yards
from the cage, including ascent to the top of an oak, he strrolled in
the direction of 2-36, displaying every few feet, and finally
went up to the nest itself. There, I suppose, to lie and digest.
I have developed a rat-roadrunner economic process that is
working out well at present. I feed household scraps to two fe-
male white rats. These bear young at short intervals. (24 in the
last week). The only problem is to coordinate the production rate
with Rhody's appetite and throat caliber, since the size of rat
he can swallow has its limits and he will not eat more than just
so many. It will be seen that, if Rhody should propagate success-
fully, I have within my reach a method of converting economic waste
into roadrunners, and at the same time change unacceptable food in
acceptable. (The order should be reversed).
History is repeating itself with Brownie and his brood. About
10:30. with Brownie on the nest, I discovered the two young thrash-
ers at the oval lawn. By the usual device of tossing worms so that
they would have to approach closer and closer to get them, I soon
had them both beside me taking worms tossed to them 2 or 3 feet
away and not alarmed by the tossing movement. They are now, both
big and strong, though one is larger than the other. The
larger was more enterprising and soon the smaller was begging him
for food. He allowed the latter to take half of a worm which he
held in his bill and then all of it without resisting. Soon both
would have been eating from hand. But Brownie came and knocked
over first one and then the other, not very roughly, although it
sounds so. B then ate the worms I gave him, turning occasionally
to attack mildly one bird after the other, feintingly. Both re-
sisted spiritedly and each in turn gained a victory over Brownie,
each driving him from the field. Nobody was hurt and neither young
ster gave ground or left. Brownie next alternately fed and shadow-
boxed with each bird, finally giving them both a good feed and left.
By this time their wants were satisfied and they drifted away.
Again we see the preliminary training in self-reliance, to be
followed in due course by less gentle treatment and eventual ejection
from the premises with meanful blows and unrelenting pursuit.
We also see Brownie, again, first as an aid in establishing
contact with his offspring and as a hindrance in maintaining it
Rhody, with his precious mouse, remained in 2-36 for only a