Mottled Petrel A=5 &=15 0=10 
The first migraht of this species was noted on 8 March. The largest 
number of birds (13) was seen ofl 2? March between Howland Island and Canton 
Island. It is interesting to note that the first Mottled Petrel was seen 
id days before the first migrant Sooty Shearwater# 
Black-winged Petrel A=3 B=0 0=2 
Five birds of this race were seen between 4°N and 12°N. 
Bulwark Petrel Ar=35 B=12 C=28 
This species was well distributed throughout the area. 
Storm Petrel sp. A=14 B=20 0=25 
Included here are all black birds with white rumps. Since three 
species have been collected in the area, positive identification in the field 
is not possible, but it is believed that at this time of year the birds are 
most likely Leach 1 s Storm Petrels. On 24 March one bird was seen that may 
have been a Haurcourt’s Storm Petrel. 
Forty-seven of the fifty-nine birds seen were in the Howland-Baker— 
Canton area. 
White-throated Storm Petrel A=2 B=0 0=0 
Two birds of this species were seen on 12 March when the ship was 
within 100 miles of Phoenix Island y the nearest breeding area. 
Red-tailed Tropicbird A*3 B=0 0=1 
As usual no pattern was evident in the distribution of this species# 
White-tailed Tropicbird A=8 B=0 0=9 
Most of the birds were seen within 200 miles of the Samoan Islands. 
Blue-faced Booby A=19 B=53 0=16 
The majority of individuals of this species were seen in the vicinity 
of Howland Island, Bkker Island, and the Phoenix Islands. 
Brown Booby A=1 B=4 C=15 
m of the Brown Boobies were seen elose to land* 
