Alaska field notes, v4435
Page 29
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
J P Plagas 1975 Journal Grid 3, 3 km S of NARL, Pt. Baran, Alaska 23 June Genus rialto: 8 pectorals holding territories contained totally, or partially, within the grid (17.5 hectares): 18 (!!); 9 Pectorals 5 (found 3 nests); Dunlin pairs 4, possibly one more based on grid; Phalaropus fulicarius pairs -> 8 (plus 6 8 and 4 9 not obviously paired); Ruddy turnstone - 2; Golden plover - 1 (possibly 2). Non shorebird: 2 pcs Pomarine Jaeger; one individual parasitic; 4 pcs Steller's eider; 3 pcs Lapland longspur. The melanoto situation, as can be seen by the results of the census, is incredible. Given that there are several 88 whose territories go beyond the grid, there is still a density of ~1.5-2 hectares/territory. Not only were there many holders of territories but there was an unquestionably high level of 88 birds operating either without territory or away from them. I was seeing more chance of 99 in which multiple 88 joined, with chances going far beyond territorial boundary. This would inflate a floater level measure. However one flock of 8 88 did go over late in the morning, behaving as a unit w/ no sign of aggression; rather they were engaged in the whuffle-type flight similar to what I've seen in Calidris in Argentina. It would appear as if the influx of 88 has occurred. During midday photographed a 9 melanoto at nest - an unbelievably cooperative girl who would return to the nest despite my paraphenalia hanging over her, w/ one right at the tripod 1.5m from the nest. During afternoon until 1730 I followed birds; Franklin's 2 melanotos (8 and 9) and one dunlin (9) on Grid 2. See following: apparent accent - The hawks buzzing low over the area made matters difficult at times. 24 June a.m. transcribed notes p.m. spp trapped incubating birds for banding during the afternoon. Banded 5 9 melanotos and 1 alpina (see banding schedule). Transects 1 and 3 25 June Began sampling transect 1 at 0900. Clean, little wind, and fairly warm although not balmy. As usual I spent ~2min by each stone, walking in an ~25m radius circle around it. When I found a 9 which appeared to have spawned off a nest & backed off and tried to frighten