Acorn woodpecker species accounts, v4451
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Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
1993 Walter D Koenig Melanerpes formicivorus HNHR, Monterey Co., Calif. 28 April Noticed on the way up to The Arnold that The ARF granary (to The R of the road just beyond turnoff to the Lichen enclosure) has fallen, presumably within the past couple months if not days. 6 July Eggs in avian nest are undeveloped & infertile. 930. Added a baby (~1000) from Central Canyon to see if we can get the Lewis' to feed. 950-1150. Videotaped the nest. AWs started feeding almost immediately and we well into the swing of things by the end of the watch. No sign of LWs at nest. 7 July The baby is fine. 915-1115. Taped. No sign of LWs. 8 July 800-1000. Taped. One incident of note: at one point, The unmarked (no whiteout) LW flew almost to the hole, but was being attacked by an AW who kept him from landing or even getting remaining in the vicinity. This was perhaps an attempted visit thwarted by the AWs? It suggests a potentially useful manipulation: move the AWs out of the cage and leave the LWs there by themselves for a bit—maybe they'll feed? I should try this soon—this one incident suggests they could be being kept away. 9 July 800. The "white-out"ed LW, who had been hiding in one of the holes the last 2 days, was dead in the cage this morning with pecks & blood on his head. Only 1 left. 845-1045. Removed AWs to adjoining cage; left the lone LW here by himself w/ the baby. No sign of him at the nest, however, during 1½ hr video taping.