39 
Table XXII. - Brood Counts - AreaIV 
Species June 1 July 1 August 1 Total Production 
i ec nelle 
Pintail - 4 3 7 
Baldpate - 6 10 10 
Gadwall 5 . 2: Z 
B-w. Teal 7 1 18 18 
G-w. Teal : - 2 5 5 
Shoveler | - - 2 2 
Unidentified - - 5 > 
Redhead a > 2 2 
Canvasback - 1 5 5 
Scaup i , 4 4 
Ruddy duck - ~ 7 7 
Bufflehead - - 2 a 
Ringneck = : 1 i 
ee 
Total 4 32 
Go 
Oo 
— 
oS 
™ 
Coot - - 25 25 
Total production on this area also was computed by adding June 1 broods to 
those observed on August 1] plus Class III and advanced Class II broods of the July 
count which were considered able to fly by August 1, 
With a breeding population of 501 pairs and a production of 102 broods we have . 
a pair-brood success of only 20.4 percent as compared to a nesting success of 
33.7 percent, 
Brood Averages by Age Classes 
Table XXIII. - Area III 

Species IA IB IIA IIB III All No. Broods * 
Mallard 6.1 5.5 5.4 4,0 4.6 Diycit 33 
Pintail 6.0 4.0 8.0 - 4.3 5.0 7 
Baldpate 7.5 7.2 9.0 8.0 7.6 17 
B-w. Teal 8.0 8.5 6.9 - 8..0 7.8 74 
Scaup 10.5 8,0 6,0 - - Terk 21 
Ruddy duck 6.4 4.8 - i ‘ 5.7 13 
Table XXIV - Area lV 
Species IA IB IIA IIB III All No. Broods * 
Mallard 8.0 7.8 5.6 Ted, Se 6.4 43 
Pintail - 7.0 6.1 526 6.1 15 
Baldpate 7.8. 9.2 7.4 10.0 - 8.4 | ~ iJ8 
B-w, Teal 7.8 7.6 9.5 9.4 .- 8.5 15 
anvasback yr 8.0 6.8 12 

* Includes reeat observations on some broods at different age periods, 
