Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1985 Walter D Koenig
Melanerpes formicivorus
Road]
HNHR
28 April 1115. Checked the nest: still the same 7 eggs; warm.
1 May 1740. Still not hatched.
2 May 1820. " "
5 May 1630. 4 babies hatched. 3 eggs did not: 2 were not developed
(#2 & 7), while #4 had developed but did not hatch.
11 May I watched this morning here for Control Day#1. Weather
was cool but not unpleasant. Lots of feeding by lots
of birds. Afterwards 2 of the babies were switched to
Finch for the day,
12 May I watched for experimental day #2. The 2 babies were then
returned from Finch.
13 May Control day #3. I added 2 babies from Finch.
14 May ! I watched for 1 hour, during which time #269 made 3
visits, staying a long time each time. Finally #383 showed
up with food, ate it herself, entered, and then turned around
and left right away. That did it - I stopped the watch
and checked the nest: 3 of the babies had had their
heads completely eaten, a fourth's skull had been smashed
and partly eaten - possibly owl predation?? Only
! This also
means that
1 baby was
removed
totally
Blk, one of the Finch babies, survived (he was cold but
tk) so I removed them all and will hang onto The
survivor until I can return him to Finch following
Vas's watch.
25 May 1000. Bird in hole... (same one in sycamore).
1445. Checked hole: empty. Could be time to watch for
egg - tossing!
26 May Stanback watched this morning: 2 (normal) eggs were laid.