2 
and the abundance of flocks. In most cases these figures along with the 
tables are sufficient to explain my findings for a particular species on 
this trip. However, some information cannot be expressed in this manner 
which necessitates the following species accounts. Only those species 
with additional information are discussed in this section. 
SPECIES ACCOUNTS 
Waved Albatross ( piomedea irrorata ) 
This albatross was found only near the Galapagos. Murphy (Oceanic 
Birds of South America 193^) gives the impression that this species is 
seldom found north of Hood Island where they nest. However, 23 were 
observed in an area over 100 miles northwest of Hood Island. 
Procellaria sp. 
On 31 August I saw a large all dark procellarid at a distance. It 
impressed me as being larger than any member of this group that I had 
seen previously, but smaller than an albatross. At the time, I identified 
it as a member of this genus, possibly parkinsani which has been previously 
recorded in this general area. I am confident that it was not any of the 
other all dark procellar ids which occur in this area - ( all of which I have 
seen). However, since I never did get a close look at the bird the identi¬ 
fication is highly tentative. 
Wedge-tailed Shearwater (Puffinus pacificus ) 
Wedge-tails, mainly dark phase, were fairly common over a large portion 
of the stu¬ 
dy area (see FIGURE 5)- In February and March light phase popu¬ 
lations were found in the area. This indicates that there are two different 
populations utilizing the area at different times of the year. Since this 
■ 
pecies only nests on one island in the eastern Pacific, at least one of 
these population must 
come from an area to the west of the study area - 
