Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
at Dr. Reynolds' day before yesterday, I was immediately struck
with the identity of the pattern of the white spots on the tails
middle-western
of our road-runner and the bird illustrated, both having the same
number of spots, six, arranged in two parallel rows of three(when
the tail is closed), the rows arranged longitudinally. The spots
roughly
on both are also of the same shape, elliptical, and appear to have
areas bearing about the same proportions to the tails of the respect-
ive birds, being also large and conspicuous.
August 2lst.
Rrs do not digest fur.
It has now been observed several times that the dried
excrement of these birds has appeared curiously felted. Examination
has shown in each instance that it is due to the presence of the
fur of the mice eaten passing through the digestive tract apparent-
(I.e.: of the other material).
ly unchanged and acting as a binder. Owing to the occurrence of
a large proportion of lime from the bony framework of the mice
also, the resultant product, when perfectly dry, is strikingly like
the plaster mixed with hair used in building. This is the first
evidence here mf that any portion of the food was indigestible. The
miscellaneous assortment of pebbles, fibres, etc. occasionally
disgorged by A and T in their infancy was not a portion of their
food. but consisted of "junk" which they picked up presumably either
as grindstones and abrasive material or in ignorance as to what
properly constituted food. Possibly. also. an indication of improper
feeding. This habit disappeared weeks ago. The disgorging act
was observed perhaps a half dozen times altogether, although many
times they have acted as if they were trying to disgorge something.
This has been observed with Rhody also.
Thrasher convention. This morning there was a "great" convention" of thrashers
again. Five or 6 birds were here, 5 being actually seen simultaneous
ly. and a babel of song. The birds were at the south west corner
first, then part of them (including Brownie) went across the street,