
108 
Table 7. -- Brood Census Summary in Oregon - East of Cascades, 1950 
ensus ota 7 Average Brood Size Broods No. 
Area Fem. % Fem. Class Class Class Per Sq. Young Per 
Period Sq. Mi. Species Censused W/Broods 1 2 3 Mi. Sq. Mile 

June 8.1 Mallard Lé 15% 5.5 8,3 - of 6.4 
lst half Pintail 13 8% 6 - - - od at 
Cin. Teal 3. 33% 5 - - a: : 
Gadwall 1 - - - - - ~ 
Redhead 9 Te 6.7 7 - 5 3.5 
Shoveler 1 - - - - ~ - 
Wood Duck l 100% a 3 oa ml elt 
G-W. Teal 2 100% L.5 a > o2 mi 
Canada Goose 8 #100% Leu 5.3 - 1.0 L.7 
Coot 10 he3 ‘ h i Xs) 2.5 

a 
end half Pintail 
Cin. Teal 
Gadwall 
Redhead 
Scaup 
BeW. Teal 
Ruddy 
Canada Goose 
“NOre NM NFO 
b's bprtt& tf 
predbtdiaud 
;itttf®idt 
Prete1rsrd&a 
OoOilrnrttg¢dst st 
= 
x 
pea 
oO 
rRrrireenee 
On 
e 
he 
= 
On 
o 
ne) 
39.2 

Merganser 7 - - - = 
: TOTAL Te 23.6% - = - 6.2 39.2 
July 8.5 Mallard 14 72% To2 5.3 10 1.2 8.1 
lst week Pintail 4 75% 7 - 8 oh 2.6 
Cin. Teal 17 88% 6.6 6 - 1.8 11.4 
Gadwall 2 100% 8 - - 2 1.9 
Redhead 9 78% 6.7 6 9 8 5.9 
Ruddy 6 67% 4.5 - 5 2.1 
G-W. Teal - 2 100% 5 - ~ of 1.2 
Scaup 3 33% 6 - ra wt 
Canada Goose 0 #+100% - hel 5.2 ho7 2303 
TOTAL 8 - - - . 2 
July — 5.6 Mallard 26 19%, 9 - 7.7 9 7.3 
2nd week Pintail 10 10% 8 - - 22 1.4 
Cin. Teal 1 - - - - ~ - 
Gadwall 9 22% 11 5 - an 2.9 
Wood Duck 3 100% 6.5 hy - 5 3.0 
Shoveler 1 - - - - - - 
B-W. Teal 2 - - - a - - 
Ruddy 9 22% _ 5 - ol 1.8 
Scaup h - ~ - - - - 
Canada Goose 6 #100% - 5.7 5.3 1.1 509 
TOTAL 1 2 ~ - a 22 
+#No areenpt made to count female geese without broods. 
(continued) 
