Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1977 Walter D. Koenig
6
Melanerpes formicivorus
Arnold 3
Hastings Reservation
(13 June)
1135. 2 Grifts showed up right away in the granary: ①♂ LB/M #205
and ②♂ LB/M #204.
1155. Same 2 grifts plus ③♀ LP-wm #120 in granary.
1355. ①♀ 204, a ♀, and ④♂ DB/wm #123 in granary. ♂123 eating an
acorn peacefully. That's what I suspected: UA2 birds are
getting some extra acorns from A3. (Of course, the precise
relationship here is still unclear at best).
1250. 2♀♀: ⑤♀ Mauve/ LP.Red #207 and ⑥♀ Red/ #128.
1330. ⑦♀ M/or #289.
1400. That probably isn't everybody (I particularly have to
find the untended ♀, and catch the ♀ at UA2 to show they
aren't the same bird) but it should do until the babies
here hatch in another week or so.
16 June
See UA2 notes for brief discussion of the split to
UA2.
Purge. ⑧♀121,123, and 126 → all Moved to UA2 ≈4 April
1977 ± 2 weeks.
17 June
1800. After just discovering the failure at UA2 and noting nobody
in the hole here, I went up to discover that the nest has failed
here as well. Inside were broken eggshells, indicating that
hatching had indeed occurred, but otherwise rien. Suddenly
it occurs to me that conditions up here (meaning presumably
insect abundance, weather, or both) must be much worse this year
that I'd thought; if A3 loses its babies right away no wonder
Lambert hasn't even tried! (Making Big Tree's feat of fledging 3 even more
impressive!) With only A1's 2nd attempt totally in the air, the Arnold
groups may fledge no more than 8 babies altogether this year,