Acorn woodpecker species accounts, v4443
Page 541
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 Lower Arnold 2 Hastings Reservation (13 May) Clearly, however, the other 2 chicks will starve within the next several hours. Despite today being relatively warm compared to the last week, obviously conditions just were not good enough for this group. The 4 eggs were opened: egg 1, the large one definitely had a yolk (broken), as well as a small (6mm) embryo. As for the 3 small eggs: ① Yolk but no obvious embryo; ② Yolk and 15mm embryo; ③ Yolk and 7mm embryo. The 4 masses were later examined microscopically: indeed, only the large egg contained a formed embryo (5mm in length); the other masses were all non-embryonic. 17 May 1810. Noone here. No sounds from hole. Nest clearly defunct. 24 May 1645. " " 31 May 1100. 1 bird sitting in the perch tree; noone in the holes. 5 June 1545. Nobody seen here. √ 13 June 1400. Counted stores: 24, all low in the outer Blue Oak. 22 June 1930. Watching. 1934. 2 birds greeted in outer area, inc. ①♂ #133. Flew into background. 1945. ②♀ (LP, DB-wn(n)) 213 walking around the Blue Oak nest tree. 2000. Enough for now. The birds are clearly still here, at least. √ 12 July 915. Only 4 apparently intact acorns remaining; the stores here are finally functionally depleted. 1 August 1010. ♀ (LP ? (could have been either ♀)) in perch tree. I suspect that she was ♀215, however. 18 September ③133 seen by Pam at the Arnold Spring this evening. 24 September 1215. 5 fresh, green acorns in the outer Blue Oak here. Also 2 birds seen in the vicinity. 1545. ①♀ (ush/DB-wn(n)) #213 in outer tree. ⑦[?] seen earlier.