
Table IV. - Nesting Data, Area lll. 
Losses 
No. of Avg. Percent Desert- 
Species Nests Clutch Hatched Success Avian Mammal Human ion Unknown 

Mallard 40 6,65 15 37.5 3 5 ] 3 13 
Pintail 13 7.7 3 23.1 4 2 4 
B-w. Teal 12 6.8 6 50.0 1 2 ] 2 
Scaup 37 8.0 19 59.4 5 2 2 4 
Canvasback 14 6,5 5 35.7 2 4 3 
Ruddy 5 6.0 4 100.0 
Shoveler 5 7.6 2 40,0 1 2 
Baldpate rs 9.0 1 50,0 l 
Redhead 2 13.0 1 50.0 l 
G-w. Teal 1 5.0 1 100.0 
Unknown 1 1 
Total 132 7.2 57 45.0* l2 14 4 9 30 
* Success based on 126 nests, as six were either still incubating at 
end of study, or were unable to be relocated, (five scaup nests 
and one ruddy nest). 
Table V.- Nesting Data, Area IV. 
' Losses 
No. of Avg. Percent Desert- 
Species Nests Clutch Hatched Success Avian Mammal Human ion Unknown 
Mallard 35 6.9 7 20 8 7 3 4 6 
Pintail 6 8.0 4 66 - 1 - 1 - 
Canvasback 13 8.0 10 7T ~ - - 2 1 
B-w. Teal 2 8.5 1 50 - - 1 - - 
G-w. Teal 6 10,2 1 17 3 - 1 - l 
Ruddy 2 4 - 0 - - - - 2 
Scaup 7 7.7 5 71 l - - ] - 
Total 71 7.2 28 40 12 8 5 8 10 
Production 
At least two beat-out brood counts were made on Area II, III and IV 
during the period from late June to mid-August. No brood counts could be made on 
Area I because of its droughted condition. 
39 
