BCF, Cromwell, June-July 1964
Page 94
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Transcription
SPECIES ACCOUNT Wedgetailed Shearwater Numbers of this species decreased 18% in number from 985 in June to 807 in July. South of 16°N dark phase birds predominated, and north of 16°N chiefly light phase birds were seen. Light phase birds were concentrated in areas closer to the islands than previously noted. The largest concentrations of dark-phase birds were still found at the south- erm end of the grid area. Christmas Island Shearwater One of this species was positively identified on 26 July. A second bird was tentatively identified as this species on 21 July. Newell's Shearwater Numbers of this species increased 10% from 15 in June to 21 in July. This species was concentrated in the area of the grid near the islands and in the southern end. Kermadeo Petrel Three of this species, all dark phase, were positively identified in the grid area in July, and two more were tentatively identified. This is the first occurrence of this species in the grid area. Bonin Island Petrel Numbers of this species decreased 34% from 176 in June to 116 in July. This species was distributed fairly randomly over all but the northeastern