Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1981 R.C. Mumme
Melanerpes fornicivorus
Son-of-Black-Oak (SOBo)
Hustings Reservation
7 Feb At 1530, I casually stroll down the grassy slope east of Black Oak
and, lo+ behold, stumble upon a brand, new Acorn woodpecker
group! Here are the facts.
partially dead
① A sleazy looking Valley Oak at the base of Black Oak Field
(just before the extremely steep part) has a pretty good number
of Acorns, mostly Q. chrysolepis. Not surprising, in that Golden Oak
predominates in the steep terrain below the granary, and
their acorns littered the ground while I walked around.
② I sit down + try to watch, and 4 birds show up.
At least 3 (I think) were unbanded, and one of the 3 was ♀.
③ This might explain my observation of 2 unbanded ♂♂
yesterday in this area (see Black Oak notes)
④ Did these birds just colonize this granary this past
fall in association with the big Q. chrysolepis crop, or
was it the year before? I remember strolling by here
in the summer of 1979 and finding no activity. Still,
it is possible that this territory was occupied fall 1979
or spring 1980. However, I would suspect fall 1980 is
more likely
⑤ One of the 4 birds that was here seemed to have
a "1st year bird's karrit".
⑥ I can count ~300 acorns while sitting above the granary.
that does not include the backside. Backside make ~600 total
12 Feb After moving hide down from Black Oak, I try here again at
1500 hrs, a bird flushed from the granary as I walked up.
1630. Nothing in 2¢ granary. Karrit; 40 to the S, but that's all
folks. Roosting I find one bird lo of the granary low hole,