Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
October 22nd.
At 7:15 A.M. one bird was on the nest, the other evidently out
foraging some distance away, as it did not respond to call and was
not seen until later.
9:35 P.M. (Temp.60; max. during the day 76) The birds have
been incubating faithfully for 9 days under conditions more favorable
as to temperature, wind and rain than obtain during the normal
spring nesting season. Rainfall since July 1st. has been 0.33 inches
total, normal 0.86, last year to date 0.01 (Oakland records)
Brownie seemed to be doing more than his share of the incubation
today and there were fewer calls for relief from the nest, possibly
because of this. Singing, both full and sub-, seems to be on the
wane, and both birds, though lively and friendly, have nothing to
say when they come for worms. The bird going off shift usually
proceeds at once to the glade, and if I am there, after having a
worm or two and a drink, spends a large part of its time in preening
and stretching as if to get the kinks out of its joints.
October 23rd.
A few isolated calls, but no early morning sustained song.
At 7:45 A.M. Greenie took over the job of incubation from her
mate, the two birds meeting in the glass house and exchanging a few
low remarks. B went directly to the glade. (Temp. now 61. minimum
during the night 60). This has been ideal weather for hatching.
5:45 P.M. (Temp. now 70. max. during day 81)
Incubation proceeded uninterrupted throughout the day. There was
little calling and practically no singing of any kind. (Possibly
favorable
these birds are weather prophets and foresaw conditions long enough
ahead to warrant their undertaking to rear a late brood!)
6:03. (Temp.72. I happened to pass the thermometer again about
5:55 and noticed that it read 71. I was certain that I had read it