Composition of the Baker Avifauna 
Date 
No. of 
Species 
Resident 
No. of 
Total Breeding Pet.of. 
No. of 
trans. 
No. of 
Pet. of shb. 
Pet. 
Present 
Pop. 
Seabirds 
Present 
Total 
Popu. 
seabirds 
pres. 
total 
Pop. 
pres. 
of 
tot Other 
March 
1963 
10-11 
226 
176 
77.9 
13 
5.8 
37 
16.4 
July 
1963 
8 
1066 
1034 
97.0 
15 
1.4 
17 
1.6 
Oct. 
1963 
16 
527 
no 
20'. 9 
123 
23.3 
294 
55.8 ± 
Feb. 
1964 
12 
476 
4o 
• 
I 7 
1 I 
1 
July 
1961 
13 
1724 
350 
20.3 
1308 
75.9 
66 
3.9 
Oct. 
1964 
13 
1272 
395 
31.0 
696 
54.7 
181 
14.2 1 
Feb. 
1965 
12 
1277 
857 
67.1 
288 
22.6 
132 
10.3 1 
May 
1965 
11 
850 
628 
73.8 
200 
23.5 
22 
2.6 
Sept. 
1965 
15-17 
717 
137 
19.1 
248 
34.6 
332 
46.3 500 
Oct. 
1965 
16 
724 
37 
5.1 
237 
32.7 
450 
62.1 250 
Nov. 
1965 
10 
774 
303 
39-1 
147 
I9.O 
324 
41.9 I 
Feb. 
1966 
8-9 
685 
253 
36.9 
101 
14.7 
331 
48.3 
Feb. 
1966 
8 
696 
401 
57-6 
74 
10.6 
221 
31.8 
March 
1966 
10-11 
1024 
617 
60.3 
91 
8.9 
316 
30.9 
May 
1966 
7-8 
619 
306 
49.4 
74 
11.9 
239 
38.6 
July 
1966 
8 
575 
446 
77-6 
20 
3.5 
109 
19.0 I 
August 
1966 
11 
1170 
890 
76.1 
45 
3.8 
235 
20.1 
Sept. 
1966 
12 
718 
474 
66.0 
17 
2.3 
227 
31.6 
Oct. 
1966 
17 
803 
4.15 
51.6 
122 
15.1 
253 
31*5 13 I 
Nov. 
1966 
17 
1022 
632 
61.8 
l66 
16.2 
224 
21.9 I 
* Species known to breed on the island (Gray-backed Tern^ Red-tailed Tropicbird^Common 
Noddy) are considered as residents each time recorded whether or not they may not 
be breeding. Blue-faced Boobies are considered breeders only for population known 
to breed since clubs are almost certainly largely composed of non-Baker island birds, 
