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Transcription
Table 2: Sectional Breakdown of Eastern Pacific Grid Bird Populations, January 1967
Species
Northern Third
Central Third
Southern Third
No.
% of Total
Birds in
Marrion
Section
Birds
per square
mile
No.
%
%
BPS/mi
No.
%
%
B/9 mi
B.-F. Albatross **
7
10.6
1.8
.010
38
57.5
9.6
.033
1
1.0
16.8
.032
Laysan Albatross **
4
33.3
1.0
.006
11
91.7
2.8
.005
2
16.7
1.2
.002
Pale-footed Shearwater *
1
100.0
.3
.003
0
0
0
0
0
0
0
0
Sooty Shearwater *
0
0
0
0
2
100.0
.5
.004
0
0
0
0
Slender-billed Shearwater *
0
0
0
0
1
100.0
.3
.002
0
0
0
0
Fulmar *
64
46.0
16.2
.173
74
53.3
18.8
.128
1
.7
.6
.002
Harold's Petrel *
0
0
0
0
1
100.0
.3
.001
0
0
0
0
Leach's Petrel **
6
4.8
1.5
.032
50
39.7
12.7
.173
70
55.5
40.5
.308
Fork-tailed Petrel **
5
38.8
1.2
.027
8
61.6
2.0
.028
0
0
0
0
White-winged Petrel *
0
0
0
0
1
100.0
.3
.001
0
0
0
0
Red Phalarope **
2
10.5
.5
.022
11
52.5
2.8
.076
3
38.0
4.6
.070
Glacous Gull *
0
0
0
0
1
100.0
.3
.001
0
0
0
0
Glacous-winged Gull *
5
35.7
1.2
.014
7
50.0
1.8
.012
4
28.6
2.3
.099
Herring Gull *
45
35.2
11.2
.122
76
59.5
19.3
.132
32
25.0
18.5
.071
Black-legged Kittiwake *
211
70.5
52.5
.581
69
23.0
17.5
.120
20
15.5
11.6
.057
Bmarine Jaeger *
3
50.7
.7
.008
3
50.0
.7
.007
0
0
0
0
Parasitic Jaeger *
3
75.0
.7
.008
1
25.0
.3
.001
0
0
0
0
Xantus Murrelet **
1
50.0
#*
.012
1
50.0
#*
.006
0
0
0
0
Rhinoceros Auklet **
11
64.8
##
.118
6
35.3
##
.042
0
0
0
0
Shearwater/Petrels *
1
10.0
.3
.003
6
60.0
1.5
.011
3
30.0
1.7
.007
Sooty/Slender-bills *
3
100.0
.7
.008
0
0
0
0
0
0
0
0
Storm Petrel Species **
3
12.0
.7
.016
20
80.0
5.1
.069
8
8.0
1.2
.009
Gull Species *
10
100%
2.5
.027
0
0
0
0
0
0
0
0
Jaeger Species *
3
60.0
.7
.008
2
48.0
.5
.004
0
0
0
0
Alcid Species **
11
92.0
#
.118
0
0
0
0
1
8.0
#
.008
Pterodroma Species *
0
0
0
0
6
85.7
1.5
.011
1
14.3
.6
.002
Bird Species *
1
100.0
.3
.003
0
0
0
0
0
0
0
0
Phalarope Species **
2
66.6
.5
.022
1
33.3
.3
.006
0
0
0
0
# See Species account
* Zone totals more than for whole grid cruise due to allowance for birds following the ship.
+ assumed to be visible for two miles
X Assumed visible at 1 mile
Q Assumed "" 1/2 ""
Φ "" 1/4 ""