Acorn woodpecker species accounts, v4446
Page 213
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
1980 Walter D. Koenig 4 Melanerpes formicivorus Finch (14 July) definitely the remains of 2 individuals: the first was a newly fledged baby whose 1º were still actively growing out. This is also supported by Sandy's next watch, where she saw 2 babies looking out of the hole whereas during her last nest watch there were 3 (this was on the 12th). j614 seen 15 July The most developed of the babies (j614?) was the one missing today. Since they were banded 10 days ago, fledging was likely, and I presume this to be one of their babies from the 2nd nest (3 were very close in development, so we'll have to wait to be sure about who it is). As for the 2nd bird, it was not a young individual. Primaries 6-9 were intact from the right wing; all 4 were fresh (newly molted?) and the total length of the 6th was 133 mm, putting the bird well above the range of 1st yr individuals (~125 mm) and even longer than the average adult (~129 mm). Furthermore, the 1º were blunt, further suggesting an adult. During her nest watch, Sandy saw ① 863, ② 866, ③ 8282, ④ 9500, and ⑤ j540; we went back out at about 1500 and after looking unsuccessfully for more remains watched for ~20 m and saw, in addition to the above 5 birds, ⑥ j541 and ⑦ j543. Thus, the only possibilities are 8501, j542, and 9293. The 1st is unlikely simply because he hasn't been seen at all around here since May (at least at the nest). The juv. is unlikely because he really couldn't have so long a set of 1º this early. Thus, the most likely victim, supported by her absence.