Acorn woodpecker species accounts, v4444
Page 27
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
1978 Walter D. Koenig Melanerpes fomticivorus Santa Barbara, 27 m. W. Durango, Durango, Mexico elev. 7900 19 January As we stepped out of the car we finally heard some good wales from the distance - a good sign that the calm and warm day will offer a better opportunity to see something here. First we went over to the same general area where all the storage trees were and did 10 11.26m radius vegetation transects, centered 50 paces apart in a rectangular fashion, starting more or less at random in the forest. We measured the size of the trees present, their identities, and % canopy and shrub cover, done using each of 25 paces (west from the center of the plot) as a sample point. There was quite a lot of activity in the vicinity of the last plot (near the 60cm DBH granary), so Pam stayed there to watch for activity while I walked over to the first granary we found, over by the road. By 1300 (after ½ hour) no birds had shown up here, and I wandered off to try elsewhere. After watching futilely at another granary for 25 min., I walked around until 1430, flushing an occasional Acorn Woodpecker and noting the oak phenology here: (see back). When a woodpecker was flushed it usually flew way off in the distance. Perhaps their long ranges are quite large this time of year. The avifauna here is an interesting combination of typical California Oak Woodland birds with a few neat neotropical specialities thrown in. A bird list for this morning (with some species seen elsewhere nearby in similar habitat or here yesterday) is in my journal!