Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1982 R.L. Munne
Melanerpes formicivorus
Chongo
7 Jan Watching here 0930, I find ♀565 wnt/LBlue right away,
but then from 0950-1020 the granary is occupied
solely + uncontestedly by 2 Buckeye birds, ♂663
B1K/LBlue-Red
and ♀666 B1K-Red/M, Those 2 birds sat around, eating
acorns, until 1020 when ♀565 returned and started to karrit
loudly and mildly chase ♀666 (but not ♂663). This commotion
seemed to attract the ♂NB, who proceeded to chase ♂663 out of
the granary (with some vigor). ♀565 then chased the intruder
♀ out. I saw one of the intruders fly off across the canyon
toward Buckeye. 1040, ♀666 returned, chased by ♀565 but
not by ♂NB, even though he was there.
** 12 Jan GROUP UPDATE **
① ♀565 founds Chongo as adult 20 Sept 1981 ±2weeks
② ♂849 (nobod's) " " Age unknown " " " " "
♀565 last seen at 1800 1 Sept 1981; Birds + stored
acorns were first seen at Chongo 19+20 Oct.
11 Feb Counted stores, 1530 650 TOTAL
Doing pretty well, considering. Flushed 2 birds from the granary
as I walked up. So group is still intact, presumably.
Also took a sample of ~ 30 acorns (almost all
live oak) and replaced them with about 30 of my own
3 April Counted stores, 1630: 410 TOTAL Not too bad.
Also, walking around with Molly, we find a new roost hole.
On Buckeye, 20 m above canyon, is spidly but relatively
large Valley Oak 50 m upstream from Chongo. It isn't
a great hole, but it could be where they've been roosting
Also, a nice-looking new hole is under construction in the granary