t 
6 
Age 
Distribution 
- 
Black- 
legged Kittiwake 
Section(s) 
Percent Adults 
Sample Size 
"A” 
North R + 
CJ 
kJ 
+ T 
17 
72 
Center U + 
V 
+ W 
29 
68 
South X + 
Y 
+ z 
100 
7 ' 
”B n 
(Outside) 
R + U + V 
+ 
z 
36 
84 
Total Grid 
• 
27 
147 
(inside) T 
+ W 
19 
37 
The table above shows two simple ways of analyzing the age distribu¬ 
tion of the present survey’s data. Direct interpretation of each method 
suggests: l) Adults move south before or more rapidly than nonadults as 
in "A;" 2 ) Adults move south at a greater mean distance from land than 
nonadults as suggested in T, B. TT From the general knowledge of gulls, the 
first interpretation does not strike me as being most tenable particularly 
when the second interpretation would also explain the first set of data. 
Further analysis of back data should be done. 
Pomarine Jaeger Stercorarius pomarinus 
Jaeger sp. 
2 15 
15 0 
0 0 0 
Observed per section 
The wintering Jaeger in the Grid is perhaps exclusively the Pomarine. 
Neither of the other two species has been definitely recorded in the last 
four surveys. 
Rhinoceros Auklet 
# Obs. — 5 
Large Alcid sp. 
$ Obs. = 2 
Xantus Murrelet 
# Ohs. =2 
Cassia’s Auklet 
# Obs. = 5 
Small alcid sp. 
=f Obs. =48 
alcid sp. 
$ Obs. =13 
Total 
73 
# Ohs .. = 9 
$ Ohs. = 1 
10 
