• / 
Herrin" mull 
(Larus ar( en ta t.us) 
1. > 
'n<louhtrd] y the most common 1 
franon wan 1 ho Herring Gull. Dorr 
following the shin, no species oil 
pulls worn found doin" so. Thin 
of pull populations in equivalent 
California pull predominates), al 
followed the ship for hours, and < 
noted to be present for at Irani f 
those followin' the ship avoraprd 
the rest were immaturns and sub-a I 
birds have a creator pelagic ward 
normal population would be predomi 
Two specimens were collected. 
' rpe ) u11 found in the i rid 
’ t.p periodic cnorks of ♦ n 
r that herring at d glaucou? 
s in contrast to specific cc 
latitudes alorip the coast (i 
Idie large pulls seen in th¬ 
ee diuti i ctively marked bird 
put It t■:;. vgn ap,e compos] 
-i'rro;i • t.rly SO per c°nt ad 
Mils. i'his would suggest tli 
ti rip terui^ncy as the are rat 
ilately adult birds. 
- r 
\r' » > 
black-legged Ki ttiwake 
(Rissa tridactyla) 
300 •» 2t c /jrnal 
Xanthus furrelet 2 
( ndomychura hynoleuca ) 
l/o birds w«re sighted durit the mr ey. 
hi nocer r *u i uklet 
( >,r Pij \ a mo no ce rata ) 
nil sightings of tl^s specie: were i r 
r f tl r grid; most were of swimmi rip birds. 
tire no rthern two- Id 
Lt should he nohe \ 
most ol their timr 
fecordly, because 
*o unseen. Thus dr 
i» 
o l 
this was the most abundant si f cits t r" ghont tie * r i i a 
survey. ’ensitv declined from r < ) i r • i , \g» corn r.iti' 
predominately immature birds (6? re** • * t.ur r s in the nor 4 < 
third, 100 per cert immaiures 4 r i e egil • -n thirl/. A pm .-or 
the grid includes a pela ic hard* \ of h,h* r rpo for t* i ? snec' 
is ;uppe terl both by the densit; shridm tier, (:m n "aide 2) au 
ape disiribution. 
Two specimens were collected. 
trie density figures for the alcidr ar° t i compare! In to the r 
species for two reasons. First, t ny si » 
the v»ater where observations are ‘fficult 
spend considerable time living, I v of’* r 
figures should be used as an inch x only v i thin the alcid grouf . 
liire^ specimens were collected. 
Grid bum ary 
As may he seen from Table 2 and the i, ecies accounts, t,lv 
seems to Include the pelagic range bordr r for several b ; ri r 
hether this is due to ocean enure its, isotherms, or is in fur 
n 
'i 
