TABLE F-18.--Long-term trend in July waterfowl brood and late-nesting indexes by species 
southern Saskatchewan, 1958-63 
[ Index numbers in thousands _] 


Species 
Broods: 
Duckbrood index~----+------------- 
Average brood size A phcdeenoeks 
Coot brood index---------------- 
Late=j=nesting index z 
Dabblers: 
Gadwall----+-=----+----- ere 
American widgeon-----<-------- 
Green-winged teal-----=------- 
Blue-winged teal-----+----=-=-- 
Shoveler---=---------------+-- 
Pintai] -------------+-----=--- 

FIM m om 

rPaAOAaW oO 
mM} Wor 
yr) oOoPrwW PP 
Subtotal ------- te ener c eee n- 
Divers: 
Ring-necked duck-------------- 
Goldeneye -------------=------ 2 
Bufflehead-------------------- 

1 Class II-and III broods only. 
2 As indicated by adult pairs and singles. 
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