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Table I - Results of Spring Aerial Surveys ~- Breeding Population Data 
Area in Pairs Per. Total Index - Total 
Location Sq. Mi. Sq. Mi. Breeding Pairs Breeding Pairs 
Misc. Low Density Areas 189, 120 0.9 170,208 153,376 
Lower Innoko 3,584 1.7 6,093 9,641 
Selawik 1,472 ore A 7,654 12,512 
Susitna 7,638 1.9 14,512 14, 665 
Stratum 1 - Total 201, 814 1.1 221,995 190, 194 
Alaska Peninsula 14, 144 4.2 59,405 40,028 
Upper Innoko 2,624 8.0 20,992 4,723 
Kobuk Delta 760 8.5 6, 460 3, 800 
Yukon Delta 24,960 3.2 79, 872 62, 400 
Stratum 2 - Total 42,488 4.1 174, 201 110,951 
Stratum 3 - Koyukuk 6,464 2.6 16, 806 17, 065 
Stratum 4 - Lake Louise 8, 384 4.0 33,536 85, 684 
Minto Lakes 2,048 11.1 — 22,733 25,150 
Fort Yukon Flats 18, 368 | 10.0 183, 680 153, 556 
Tanana-Kuskokwim 30, 720 3.6 110, 592 62,976 
Stratum 5 - Total 51, 136 | 5.6 286, 362 241, 682 
Stratum 6 ~ Copper 
River Delta 1,526 39.1 60,058 17,403 
All Strata Combined 311, 822 2.6 798, 264 662, 790 
Mean Density 
Population Index 
1953 Population 
