152 
Table II - Totals of all brood classes by species for 1951 and 1952 on 
Reservoir Trend Areas 
a ea a 

Broods Young Average 
Species 1951 1952 1951 1952 1951 1952 
Mallard 70 25 421 158 6.02 6.33 
Pintail 54 25 327 139 6.06 5.57 
Gadwall 66 91 535 581 8.12 6,34 
Cinnamon teal 23 26 136 105 5.92 4.04 
G-w. teal 7 8 49 50 7.0 6.25 
Shoveler 1 - 6 - 6.0 - 
Redhead 7 6 33 30 4.72 5.0 
Lesser scaup 13 . 24 66 160 5,08 6.68 
Baldpate 4 2 24 18 6.0 9.0 
Total 245 207 1,597 1,241 : = 
Duck production at Ruby Lake National Wildlife Refuge appears about the 
same as in 1951 or slightly better as are the production results at Sheldon National 
Antelope Refuge (Unit I.) 
Table III - Summary of Duck Brood Count Data for 1951 and 1952 at Ruby Lake 
National Wildlife Refuge 



1951 1952 
Species Broods Young Broods Young 
Mallard 26 126 18 98 
Pintail 2 11 rae 4 
Gadwall 5 41 4 23 
Cinnamon teal 13 85 13 89 
Shoveler 2 6 1 3 
Redhead 39 227 32 195 
Canvasback 63 317 30 163 
Lesser scaup 5 24 - - 
Ruddy duck 9 59 23 148 
Ring-necked duck 1 7 - - 
Unidentified - - 46 292 
Total 165 903 167 1,911 
Average brood size 5.47 6.06 
In westcentral Nevada (Unit IV) after extracting comparable data for both 
seasons observations, the duck production shows a 2.6 percent increase; or for all 
practical purposes production was about the same in 1952 as compared to 1951. The 
Stillwater Wildlife Management Area also in Unit IV shows a 1.33 percent decrease; 
therefore production can be considered the same in 1952 as in 1951 in westcentral 
Nevada, 
