MONOGRAPH OF THE PETRELS. 



" Raza and Branca may be looked upon as the chief habitat of this species. Before 

 landing on Raza, we saw a large flock in a wedge-shaped formation sleeping on the 

 water. They frequent chiefly the hollows in the cliffs, but we found some on the 

 higher ground in holes made by the birds themselves underneath large boulders, 

 where the entrances were strewn with small stones and flakes of rock, evidently 

 brought there by the birds, since the soil is of a fine nature." 



" These Shearwaters appear to prey upon smaller birds, for in many instances 

 the vicinity of their holes was strewn with bones and feathers. While on Brava, we 

 constantly heard this bird at night among the hills ; its weird cry, only enhanced by 

 the silence, is like the whistling cry of the Widgeon. When fishermen land on Raza, 

 they capture many of these birds for eating purposes, sometimes taking away almost 

 a boat-load to their homes " (Ibis, 1898, p. 108). 



The breeding-place of P. edwardsi has not yet been determined, but it is doubtless 

 to be sought for on some of the Cape Verde Islands. 



The species is so closely allied to P. kuhli that it has not been considered necessary 

 to give a separate Plate. 



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