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Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
1981 Walter D. Koenig
Melanerpes formicivorus
Haystack: Blonquitt Hastings Reservation
15 January
1230. Counted stores: 1959; I also took a sample of 50 acorns
from the tree.
29 March
Punje: 3576. Last seen 2 Dec. 1980 (Ron), gone by
21 Jan 1981 (Ron): Disappeared about 27 Dec. ± 2 wks.
5 April
945. Several birds (from 1800?) in lower portion of the
territory by nest tree. ① 9484 in granary. ② 8 or 1m #173
here also. But lots of riff-raff on the peripheries...
1000. Counted stores: 960.
23 April
1420. Checked the nesthole here, where Mary had seen some
activity, but nothing as yet.
7 May
Ron found the nest here this morning—for the 1st time, it's
not in the same old hole!
8 May
1030. Climbed up and opened the hole, which is a mere
2½ or so down below 4" of wood. After ~2 hrs of very
cruel hanging and cutting, I got down to the 5 eggs.
One had a hairline crack which may have been my
fault, though I don't know how. In any case, it wasn't
leaking or anything, so maybe it will be alright.
15 May
1600. Checked the nest: still 5 eggs; not hatched yet.
22 May
1400. Checked the nest: 3 babies, 2 noticeably larger
than the 3rd, and 1 unhatched egg—the one with the
hairline crack. It developed but didn't hatch; but
I have to admit that at this point I don't see how
I could have been the cause of the problem. The
babies were ~6 dys old.
9 June
1400. Climbed up to band the babies, only to find that the
nest was entirely empty! Since we haven't been watching