Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1977 Walter D. Koenig
Melanerpes formicivorus
Road 3
(14 May)
1537. 8184 had come out of hole, went to anvil, worked at an acorn
for 2 minutes, then flew directly to hole, then entered once the
♀, who having done the same thing several minutes earlier was
still inside, came out. (The weather right now is sunny but
cool and quite windy).
1545. Birds will sit on a limb looking around for several minutes,
as if they were looking for some insects to go out and hawk.
No hawking taking place in my view, however (birds are out of sight
much of the time, of course).
1550. One hawking flight seen. So far I've been pretty
unsuccessful at pinning down who's doing most of the feeding (I've
seen 6 trips to nest so far, 3♂ and 3♀), but the birds involved
are certainly most likely 8184 and 8265. They are clearly
doing their best with what's available, meaning mostly acorns.
Certainly the odds of babies surviving on largely an all-acorn
diet must be pretty small, however. [but neither's bands seen especially]
I will.
1556. Both 8♀ here, and both seen feeding. 8265 watched at the
anvil eating some acorn bits herself (or so it seemed), then flying
to the nest.
1600. 8184 clearly getting at an acorn, then going to the nest.
Birds (2-3 anyway) are almost taking turns at the anvil (the other
remaining in the nest until another bird comes to feed, having just
came from an anvil). There's no question but that the diet here
must be heavily on the acorn side.
1610. 8? [illegible] #68 in nest tree briefly; not seen going to nest
1615. Leaving. With 9-10 trips in the hour I was here, the feeding rate
does not seem at all low. If they have problems here (and