PTERODROMA EXTERNA 



MAY 1964 



JUNE 1964 



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Figure 6a. — Distribution of Juan Fernandez and White-necked Petrels, May-September 1964. 



Solander's Petrel 

 Pterodroma solandri (Gould) 



Status : Hypothetical, based on several sight 

 records. 



Nine birds thought to be this species were 

 seen in the study area: one in April 1964, 

 seven in October 1964, and one in November 

 1964. The seven seen in October were all 

 heading south, possibly migrating. The observ- 

 ers' lack of familiarity with the field charac- 

 teristics of this species makes all identifica- 

 tions tentative. This species has not previously 

 been reported from the central Pacific Ocean. 

 Specimen records exist from the western Pa- 

 cific near Japan (Kuroda, 1955). the only rec- 

 ords at any great distance from its breeding 

 grounds on Lord Howe Island (between Australia 

 and New Zealand). 



Tahiti Petrel or Pterodroma rostrata (Peale) 

 Phoenix Petrel Pterodroma alba (Gmelin) 



Status : Rare visitor. 



Twelve sight records were made of either or 

 both of these similar species; four in November 



1964, one in December 1964, one in January 



1965, two in March 1965, and four in June 1965. 

 Although no specimens of either species were 



taken in the study area, POBSP personnel have 

 collected both species at comparable latitudes 

 elsewhere in the central Pacific (Gould and 

 King, 1967). 



No particular distribution pattern was indi- 

 cated by the records. Birds were seen from 

 lat. 10° to 23° N. and from long. 148° to 157° W. 



Either species could be expected to occur in 

 the study area, but neither occurs regularly or 

 in abundance. 



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