TABLE F-4.--Waterfowl brood and late-nesting indexes by stratum, compared with 
previous year and long-term averages, southern Alberta, July, 1962-63 
(Index numbers in thousands ] 























Stratum Total 
Te 
51 134 17 132 202 239 + 54 
6.0 on 4.7 5.6 6.2 5.9 + 10 
1 
Average | Percent Change 
Species 

Broods: 
Duck brood index--------- 
Average brood size!------ 
Coot brood index--------- 
Late nesting index? <o-+42-= 
Dabblers: 
American widgeon------- 
Green-winged teal------ 
Blue-winged teal------- 
Shoveler-----~---------- 
Pintail-----+---.------- 
Subtotal-------.----- 
Divers: 
Redhead-= —=—<2= Ses ee ee 
Goldeneye-------------- 
Bufflehead------------- 
sea FUddy duck----+2+-n2--- 
Subtotal-----+-------- 
, Class II and III broods only. 
As indicated by adult pairs and singles. 
137 
