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Leach 1 s Storm Petrel cont. 
Probably the greater portion of the 4-8 identified white-rumped storm petrels 
are referable to this species* The V-shaped rump patch and forked tail are 
good field characters only at close range. 
Red-tailed Tropicbird a = 19 b = 4 c = 4-0 
Scattered sightings were recorded in all areas of the cruise. Concentrations 
were noted south of Oahu and near Christmas Island. Six specimens were collected. 
White-tailed Tropicbird a = 12 b = 38 c = 13 
This species was distributed throughout the entire cruise area in low numbers. 
Some concentration was found north of Samoa; a flock of 6 plus three Common Noddy 
was seen on 6 October and seven were noted in a large mixed feeding flock here 
on 11 October. One specimen was collected. 
Blue-faced Booby a = 2 b = 4-18 c = 36 
On 3 October just south of Enderbury, 4-00 (88 percent of the total) were 
recorded in an immense mixed feeding flock. Other than this large concentration, 
birds were distributed rather spareely through the Phoenix Islands and between 
Canton and Christmas Islands. None was recorded north of 10°N. Three specimens 
were collected, two of which were banded. Both banded birds were collected on 
26 October, between Canton and Christmas Islands; of these, one had been banded 
on Enderbury, roughly 4-20 miles distant, the other had been banded on Birnie, 
roughly 4-55 miles distant. Also, Howland blue-str earner ed birds were noted as 
far away as Enderbury and between Canton and Christmas Islands, roughly 510 
miles distant. 
Brown Booby a = 10 b = 60 0 =9 
Practically all sightings were in close proximity of breeding islands. The 
majority of birds (4-8) were recorded in a huge feeding flock just south 
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