Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1314
At the present time, as the notes show, Rhody's habit when out
of his roost and loafing, is to sit somewhere along the crest of
the South Bank, looking off to the south, usually between A and
D; mostly along side of C. Here he preens and warms his back
also, depending upon air temperature and intensity of sunlight.
On cool-bright days he usually does not sit under these bushes.
On warm-bright days he is inclined to sit under them in order to
get partial shade. On hot days he seeks denser shade, since these
bushes are, during the drought, not well equipped with leaves.
Also he may retreat under them, regardless of temperature, for
purposes of concealment. If the menace is great enough he may
retreat into the "Scattered bushes" shown at the S.W. corner of
the West Lot. (There are open spaces amongst them). Or he may
go into the thicket or to tree 9.
For the benefit, now, of some hypothetical, future compar-
atve psychologist, who may see these notes and find something in
them which he regards as valid evidence and applicable to his
studies, I shall endeavor to describe, as accurately as possible,
Rhody's typical physical response, when he is found at his post
and I call him from the Clearing on the other side of the fence.
The meaning that I attach to the words used is that of every-
day speech. Should any of the words have, in addition, a second-
ary, technical meaning in the language of psychologists, such instan-
ces are to be regarded as purely accidental, unless the psycholo-
gist, on his own responsibility, chooses otherwise, or I specific-
ally indicate that the technical sense is intended.
However, these are merely rough notes, and I do not know
what I am going to say at present; but the endeavor will be as
stated. It should be understood, also, that the language of
psychology forms no part of my equipment and that I am, in fact,
forced to use words that apply properly only to human behavior--
from the psychologists' technical point of view.
Rhody's Physical Response to Call.
Note: These observations are limited strictly to the bird's
behavior under conditions that have prevailed during a period beginning at about November 1st.,
1936 and ending December 14th. at 1:10 P.M.
During this period there has been deficient rainfall by an
extremely wide margin, an increasing amount of fog and cloudiness,
gradually declining temperatures--more especially at night. Food
supply has remained adequate, both because I have continued to give
him meat and mice and because lizards, grasshoppers and so forth
are still abundant.
Shortly before the opening of the period Rhody was apparently
attacked by some animal (Oct.26.) that caused him to lose 7 of
his 10 rectrices, most of his tail coverts, several of his flight
feathers, many wing coverts and body feathers. This had the effect
or at least synchronized with his almost complete cessation of
visits to the cage for meat and coming inside the property lines.
His moult had been substantially completed; loss of this
considerable number of feathers, in a sense, necessitated "re-doing"
a part of the moult.
About the beginning of the period he began to go to roost
earlier and come down later, his time in the roost becoming pro-
gressively longer as the days passed--with some irregularities--
so that his roosting time was seldom shorter than 18 to 20 hours
in each 24. Sometimes being over 23 hours, and yesterday-today
believed to be in excess of 45 of continuous occupancy.