Acorn woodpecker species accounts, v4449
Page 35
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
1989 1990 Walter D. Koenig Melanerpes formicivorus 1800. HNHR 21 April 1830. None in any holes here; including the new hole across the road (across and about 50m up from post 1900 in a Valley Oak facing School Hill West). 12 May 930. Up at the base of Haystack-Blonquist's granary I found the body of ♀1554, a helper from 1800. She had been dead several days, but probably not much longer. Odd! I wonder what prompted her demise up here? Her band #942-15783. 3 June 1050. Set up for a shot at 8774 at the nest. 1150. Birds now feeding: 9787, ♂1438, the breeder ♂?, but hard to tell them apart! 1210. Got him! 1 August 1900. Lots of stores still here: I counted 1030. As for capacity, my estimate (based on a count) was 1st tree: 2400 → 2800 ≈ 3000. 2nd tree: 400 I doubt very much that their capacity is a great deal above this. 1990 8 January 1200. Counted stores: 1st tree: 2040 → 2040. 2nd tree: 0 A fair number of the acorns look old, and I bet they're leftovers from last year. In any case, the 1st tree is fairly full, and I'd still put capacity in at around 3000. 12 April 945. Several birds over here, inc. a ♀ (not being guarded, apparently) 950. ♂ flew in, ♀ flew off toward live Oak up hill behind granary (?) 1015. There do seem to be 3 birds here, but I wasn't able to get good IDs on them. Checked holes as well - keep an eye on that Live Oak!