Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1982 R.C. Munne
Melanerpes formicivorus
Y
29 April all seen well. Also, the Y birds seem to have taken
over the entire knoll, and there is no trace of knoll Set
birds whatsoever.
② Holewise, nobody seems to be working on the Blue
Oak hole on the Knoll anymore. Very little progress had
been made, and according to Alan, it's still not deep enough
for birds to enter.
③ Instead, the last 2 days the birds ♂ (♂669 for-sure)
have been actively excavating a strange new hole in the big
sycamore 30m upstream of the Y sycamore. The hole
is in a thin, sharp, broken stub about halfway up the tree.
Still not deep enough for birds to enter, though.
④ Birds are also interested in two holes in the Y sycamor,
the one they have been roosting in, plus the weird one just
below the woodrat nest.
6 May Watching here 1030. Well, ♂669 is working on yet
another hole here: This is in the VO just upstream
of the Lower Y Sycamore, in a dead broken stub
of the Valley Oak. At the moment, ♂669 is only getting
his head in, but he is making progress, it seems. I
think ♀NB was working on it for awhile herself,
just as I walked over.
1045, ♀714 is now working on a hole in the very top
of the Low Y sycamore in a dead stub. She garricks once
Also a "head only" hole.
1110, ♂669 moves an acorn in the grassy. So they do
still have acorns, even though they're hard to find.