PACIFIC FLYWAY 
NEVADA 
Weather and Water Conditions 
Tt OO 
Weather conditions have been favorable to waterfowl production 
throughout the late spring and early sumer nesting period. Severe storms 
during March and early April increased the mountain snow pack. The water 
supply forecast as of April 1, 1958, indicated that this year will be the 
pest irrigation water year since the record-breakin:: year of 1952. Most 
reservoirs were lowered in anticipation of hich expected flows. 
Stream flows. varied from 125 percent to 177 percent of normal. 
All major waterfowl producing reservoirs were at or near capacity storaze 
during the peak of the nesting season. 
Breeding Population indices 
Ducks: Breeding pair coumts taken at the Stillwater Wildlife 
Management Area show an increase of 14.7 percent over last year. There 
were 4,765 estimated breeding pairs usin; the area this year compared to 
4,157 pairs in 1957. Sienificant increases were noticed in mallards, 
gndwolls, pintails and cizmaaon teal. Other nesting species showed no 
significant change. This key area is used as an index for production 
trends in west-central Nevada. Species abundance presented in the fol- 
lowing table remains fairly constant from year to year: 
Species Composition of Breeding Pairs 
Stillwater Wilcdlite Management Area _ 


Percent 
Species a Pairs Abundance 
a a a eT 
Redhead 1,796 ee) 
Cinnamon Teal L479 31.0 
GadwaL 635 13.3 
Mallard ey 8.7 
Pintail 206 443 
Ruddy 184 367 
ShoveLer 35 a7 
Baldpate 5 wl 
Green-winged Teal 4 - 
TOTAL 4768 
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