F. PRODUCTION SURVEY TABLES 
? 
TABLE F-1.--Number and size of duck broods, Minto Lakes study 
area, Alaska, 1962 and 1963 
Minto Lakes 
Species 1962 1963 
Number of | Average {| Number of| Average 
broods size broods size 
18 6.6 
6 6.9 
16 9.0 
1 6. 
6 









Dabblers: 
American widgeon-----+-+<-------= 
Green-winged teal------+---++----- 
Blue-winged teal---------------- 
Shoveler---+-s-<ceeseersenn cree 
Pintai leo 2-2n nen ee ene nen eee 
Subtotal--<------------- ee =~ 
Divers: 
Redhead ------<-<--<---== meee 
Goldeneye ----9------ eae ee ene nn- 
Bufflehead---------------senn =~ 
Subtotal-----------+—4+------- 
Miscellaneous: 
Scoter «---8- es He ese eee een ween en 
“ee Total ducks -<------+-<=<-------- 
TABLE F-2,--Comparison of nesting densities on the Kashunuk 
River study area, Alaska, 1961-63 
Species 











Ducks: 
Pintail----------- ------+-+--«+-- 
Geese: 
Cackling------------------------ 
Black brant--~-+----------------- 
Emperor------~=- pees e cee ee ee 
Unidentified---------8------.-+-- 
Subtotal ------+--------------= 
Total -<--n--nnnn nn een eee e == =— 
135 
