BIRDS OF NEW ZEALAND NOT FIGURED BY BULLER. 
In the twenty-third volume of the Transaction, p. 224, as quoted, Cheeseman, 
writing of the Birds of the Kennadec Island, says this bird is not uncommon 
during the summer months, arriving about the beginning of November, and 
leaving again at the end of April. It breeds on Meyer Island, and more sparingly 
on Sunday Island, generally in company with Puffinus assimilis. 
It constructs a burrow sometimes over a yard in length, depositing a single 
egg, pure white, at the extremity. The egg measures 50 mm. by 37. 
Breeding-season, October and November to January. 
Dr. Robert C. Murphy worked Pteroclroma cookii and its allies, at the 
reference quoted above : for this form he gave the sub-specific characters as 
of intermediate size between axillaris and cookii, but with a longer tail than 
either, the minimum range of tail-length equally or exceeding the maxima 
for typical cookii and axillaris ; white area on inner vanes of primaries reduced, 
appearing only basallv on the outermost quill, and on the proximal half of the 
second, grey area at the sides of the neck and breast more extensive than in 
other races of cookii, having a tendency to join across the breast and to extend, 
in the form of vermiculate bars, towards the throat and along the whole length of 
the flanks ; feathering in front of, and below, the eye, usually more densely 
black than in other forms of the species. 
He also says that Beck found well-developed young in November; the adult 
were seen entering their burrows in daylight. 
In the adult hi life the tarsus and upper part of the foot flesh colour; 
remainder black, including the whole length of the outer toe. 
In his handy little book Oliver, p. 146, says the nesting is covered with dove- 
grey down with the abdomen and a line extending thence to the chin white 
(Sunday Island). 
Eggs. Clutch one, broadly ovoid, white, 50 to 53 mm. by 38.5 to 38.8 ; or narrowly ovoid, 51.5 mm. 
by 36.5 (Sunday Island). 
Breeding Habits. The Black-winged Petrel breeds on all the islands of the Kermadec Group, except 
French Rock. Its colonies arc on slopes near the shores covered with low scrub or Mariscus 
tussocks, and in the loose soil this species, in company with the Wedge-tailed Shearwater, 
makes its burrows. These are two to three feet in length and in each is laid a single white 
e ES- The birds are first heard at night late in October. They land to clear out the burrows 
about the middle of November, and lay in the latter part of December and first half of 
January. The young birds leave the island during April. 
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