BCF, Cromwell, January 1965
Page 4
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Transcription
January 1965 - BCF cruise White-necked Petrel Eight birds were observed in January, of which 5 were almost certainly this type, while the other 3 may have been this type or the very similar Juan Fernandez Petrel. Distinction between the two birds is not always possible. Juan Fernandez Petrel Forty-three individuals were recorded in January, a continuing decline from the 156 seen in December. No marked distribution pattern was noted. Considering that the breeding season for this bird began two months ago it is surprising to find such a sizeable population still in the area. Evidently it is never wholly absent from the area. As the plumage of this bird wears, it more closely resembles the White-necked Petrel in that the dark edges of the white nape feathers wear off. Bulwer's Petrel ? One bird, thought to be this species, was seen imperfectly on 21 January. This species is not expected to appear in numbers in the area until March. Leach's Petrel Eighty-one birds of this species and an additional 7 presumed to be this species, although imperfectly observed, were recorded in January, a substantial increase over the 53 seen in December. Numbers were distributed fairly uniformly over the whole area except for one concentration around 18°N - 157°W where 37 birds were seen on 6 January, including a flock of 14. One bird flew aboard on the night of 6 January. It was collected.