migrating to the east; likely headed toward breeding grounds 
in the Phoenix and/or Line Islands. 
White-throated Storm Petrel a=1 b=7 c=1 
Most sightings were near McKean Island in the Phoenix, 
group where the species breeds. Birds of various color phases 
ranging from normal to pure melanlstic were noted. 
Leach's Storm Petrel a=6 b=2 c=11 
Harcourt's Storm Petrel a=0 b=1 c=1 
Unidentified whlte-rumned storm petrels a=76 b=101 c=133 
The majority of sightings were concentrated in a broad 
equatorial belt from the Howland-Baker Phoenix group to Christ¬ 
mas Island. This large area is utilized by Leach's Storm 
Petrels as a wintering ground. Random collecting produced 
22 Leaclis and 2 Harcourt's Storm Petrels; thus the vast majority 
of unidentified birds are likely referable to Leach's. 
Numbers of white-rumped storm petrels were Just beginning to 
build up in this area during October 1965* 
Red-tailed Tronlcblrd a=12 b=0 c=9 
Scattered sightings were recorded in JLREA^s a and c. 
Surprisingly, none were recorded in AREA b, between the Southern 
Grid and Samoa. Numbers were considerably higher during Sept- 
eraber-October 1965 with concentrations south of Oahu and near 
Christmas Island. Five specimens were collected during the 
present cruise. 
White-tailed Tronlcblrd a=23 b=21 c=1 
Scattered sightings were recorded throughout AREA s a 
and b. Some concentrations were noted south of the main 
