Acorn woodpecker species accounts, v4456
Page 355
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
1982 R.L. Mumme 4 Melanerpes formicivorus Arnold L (27June) A couple of interesting points: ① This nest certainly overlapped with the first nest (at least by a few days), which no doubt explains the unusual nest site choice. Other than the "traditional" nesthole, I would infer that this group has few (if any) viable bbikes alternatives that are in or close to the granary ② I think it might be a good generalization that woodpeckers wont Overlap nests unless they have a lot of helpers (as both BO + Al do this year). The helpers are needed to finish up the first nest while the adults get going on the second. Also, both Al & BO are still very well supplied with acorns. 5July Banded two young here, 0800, after opening the nest (not as hard as I thought). The nestlings were extremely thin and poorly nourished. By feather growth, they were at least 20-21 days old, but they weighed only ~50grams! Very poor. See Capture record for details. Also, I was unable to git a blood sample from either of them, Simply because I couldn't find the wing vein! They were just too small. Anyway, they were banded Juvs. 826 + 827 I almost forgot: At the bottom of the nest was a rather Smelly 15-18 day old nestling that had been dead for at least a few days. So there were certainly 3 nestlings at one point, and probably three when I peeped in 0~27 June