Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1994
1995
Walter D Koenig
2
Melanerpes formicivorus
Black Oak
HNHR
11 April
900. Quite a few stores left. No birds in any of the known
holes, however.
1130. Second time around: Bird in old nest hole, relatively low
in central Valley Oak facing back toward Arnold Cabin. Went up
and reopened the hole, finding 3 fresh eggs (marked 1-3).
15 April
1100. Checked nest: 4 eggs. Measured: ① 24.7×17.9
② 26.0×17.4 ③ 25.5×17.6 ④ Laid 12 April, presumably
24.7×17.1
24 May
Ceranamy still loaded.
1530. Based on watches by Mark & Jenny, as well as a brief
look myself, there would appear to be a new group in the
"Bianca side" area here, going over to the forest on the
Bianca side (see map on back). I watched a very
nice-looking hole in the trap tree for a few minutes but
no sign that it's a nest, or at least that it's now active.
Apparently there are several NOBAs in this group, which
I will call SIBO ("sibling" of Black Oak). [=Phobo]
If nothing else, this hole is a very likely voost hole. Birds
definitely hang out here.
8 June
1600. Checked the 1st nest hole, where birds had been lurking on
occasion, but it's empty.
1995
21 April
1600. Bird in hole (same as last year's): 4 eggs, incubated.
I marked them and measured one (marked #1): 24.7×17.4 mm.
26 April
1430. 4 babies, 3-4 do, Plenty of stores still here.
16 May
1130. Banded & bled the 4 kids here. Plenty of stores left.
21 June
1400. No sign of a nest, but still some stores.