92 
PACIFIC SCIENCE, Vol. V, January, 1951 
TABLE 1 (Continued) 
Distribution and Populations of the Lace-necked Dove in Hawaii by Vegetation Zone 
VEGETATION 
ZONES 
SQUARE 
MILES 
SQUARE 
MILES 
OCCUPIED 
PERCENTAGE 
OF ZONE 
OCCUPIED 
TOTAL 
POPULATION 
SQUARE MILES WITH DENSITIES OF 
1-10 
11-25 
26-50 
51-100 
101-200 
ZONE Ds 
Hawaii .... 
353 
74 
21 
740 
74 
0 
0 
0 
0 
Kauai 
10 
9 
90 
130 
4 
5 
0 
0 
0 
Lanai ...... 
0 
0 
0 
0 
0 
0 
0 
0 
0 
Maui ...... 
23 
0 
0 
0 
0 
0 
0 
0 
0 
Molokai. . . 
0 
0 
0 
0 
0 
0 
0 
0 
0 
Oahu. ..... 
0 
0 
0 
0 
0 
0 
0 
0 
0 
Total. . . . 
386 
83 
21 
870 
78 
5 
0 
0 
0 
ZONE El 
Hawaii .... 
647 
92 
14 
940 
90 
2 
0 
0 
0 
Kauai 
0 
0 
0 
0 
0 
0 
0 
0 
0 
Lanai. ..... 
0 
0 
0 
0 
0 
0 
0 
0 
0 
Maui 
39 
0 
0 
0 
0 
0 
0 
0 
0 
Molokai. . . 
0 
0 
0 
0 
0 
0 
0 
0 
0 
Oahu 
0 
0 
0 
0 
0 
0 
0 
0 
0 
Total. . . . 
686 
92 
13 
940 
90 
2 
0 
0 
0 
ZONE E 2 
Hawaii .... 
503 
28 
5 
280 
28 
0 
0 
0 
0 
Kauai ..... 
0 
0 
0 
0 
0 
0 
0 
0 
0 
Lanai 
0 
0 
0 
0 
0 
0 
0 
0 
0 
Maui 
44 
0 
0 
0 
0 
0 
0 
0 
0 
Molokai. . . 
0 
0 
0 
0 
0 
0 
0 
0 
0 
Oahu 
0 
0 
0 
0 
0 
0 
0 
■ 0 
0 
Total. . . . 
547 
28 
5 
280 
28 
0 
0 
0 
0 
ZONE E3 No Lace-necked Doves 
TOTALS 
Hawaii .... 
4,030 
1,723 
43 
31,570 
1,059 
368 
296 
0 
0 
Kauai 
555 
306 
55 
10,470 
15 
141 
150 
0 
0 
Lanai 
141 
138 
98 
3,470 
93 
0 
21 
24 
0 
Maui 
728 
320 
44 
16,730 
19 
5 
232 
64 
0 
Molokai . . . 
260 
184 
71 
13,990 
0 
65 
12 
86 
21 
Oahu 
604 
451 
75 
12,450 
0 
358 
42 
51 
0 
Total. , . . 
6,318 
3,122 
49 
88,680 
1,186 
937 
753 
225 
21 
tribution. These were made in conjunction 
with inventories taken of other game birds 
and offered us the most suitable means for 
establishing satisfactory estimates of popula- 
tion densities. It is realized that a daytime 
population estimate may include some birds 
feeding but not roosting in a given zone. 
However, in the overall population estimate, 
any error due to this fact appears to be of little 
consequence. Much of the daily movement 
takes place within a vegetation zone, and 
where flyways do exist, they are generally 
found between vegetation zones A, B, and Ci, 
all of which rank as dove range of equal 
quality on the basis of strip-count estimates. 
Field observations on the amount of available 
dove food and the occurrence of roosting 
cover correspond to the general ratings of 
vegetation zones by population estimates. 
An analysis of Table 1 shows zones A, B, 
and Cl to be the best zones for Lace-necked 
Doves. They all have high percentages of 
occupancy (89-90 per cent), high popula- 
tions (16,000-29,000), and include'very high 
