Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1980 Walter D. Koenig
Melanerpes formicivorus
Plague
Hastings Reservation
(30 May) sequence is given on the back of p.16. We know both laid on
the 24th, and that $496 skipped the 25th while $494 laid on
both the 25th and 26th. Given the hypothetical layings of
the 27th and 28th, we presume that $494 laid on each
day between the 24th and 27th (4 eggs), while $496 alternated: 24th, 26th, 28th, plus her 1 (or 1½) eggs on the 23rd.
If we give her both eggs on the 23rd, she gets 4½, 1½ of
which were tossed. Otherwise she gets 4 (1 tossed), while
$494 gets 5 (1 tossed - the nut). Either of these are
reasonable scenarios.
Once again, see our transcribed notes for complete details
on our observations here during the last week.
1 June
1445. Checked the hole: still 7 eggs.
5 June
1100. Checked hole: all 7 eggs still there; warm; all appear to be
fertile.
6 June
915. Checked the hole, where none of the eggs have hatched as yet.
7 June
900. Checked the hole, finding 1 hatched egg (baby was marked with
ink on its left heel pad) from egg #1; eggs #3 and 4 were pipping;
eggs #2, 6, and 7 weren't pipping quite yet, while egg #5 had
disappeared entirely, with no evidence that it had hatched!
1145. Pam saw $521 over at the Blouquist's Knoll (at 4) today.
1745. Checked the nest again, finding 4 babies plus the 2 eggs.
This time I weighed them all and marked them. Eggs 6 and 7
are the 2 still to go.
12 June
Nancy reports having seen $494 on the census plot on the side of school Hill
this afternoon (!).
21 June
Yesterday at 930 I set up the movie camera here and got it