Table I.- Breeding Density and Population Index of Game Ducks - Aerial Survey, May 31 - June 10, 1955. 
eS eee i re 
Mean 
Number of Density Population Range - 
Area 16 Mi. Transects Sq.Mi. Prs./ Index Total Prs. Per Trans. Sampling Error 
Location Stratum 'Sq. Mi. 1/4 Mi. 1/8 Mi. Sampled Sq.Mi. Breeding Prs. 1/4 Mi. 1/8 Mi. 1/4 Mi. 1/8 Mi. 
a a a a a 





1 520 4 8 .8 415 1-2(1) 20% 
. 2 1,500 12 24 4.3 6,450 4-18(14) 29% 
Innoko - 
Iditarod 3 1,050 2 4 8.0 8, 400 27-27(0) 
2 16, 300 28 56 2.6 42,380 1-12(11) 22% 
Yukon Delta 3 9, 380 7 14 8.3 77, 850 7-28(21) 38% 
Koyukuk 2 5, 850 7 14 4.7 27,500 3-20(17) 58% 
Selawik 2 2, 700 3 6 4.0 10, 800 5 -13(8) 135% 
Buckland R. 4 200 1 2 13.5 2, 700 
Norton Bay 3 400 2 4 8.0 3, 200 8-24(16) 
Lake Louise 2 4,030 26 104 4.8 19, 350 2-40(38) 25% 
Alaska Penin- 
sula 2 6,200 7 28 3.2 19, 840 4-24(20) 56% 
3 200 1 4 8.1 1,620 
Copper R. Delta 7 300 5 20 28.7 8,610 94 -147(53) 21% 
Pye See ght ee ae ed Ey ye ey Se Nee Pe tg a a de 2 ee ee 
Minto Lakes 3 2,050 9 36 9.7. 19, 885 5 -37(32) 23% 
Ft. Yukon Flats 3 18, 370 34 136 5.5 101,000 3-41(38) 19% 
Total 68, 450 82 62 460 5.1 350, 000 2-147(145: 1-32(31) 21% 21% 
weighted 

