38 
Production 
Brood counts were made at periods of from 10 days to two weeks apart on 
_ Areas III and IV after June 15. No brood counts were made on AreaI[ due to the 
illness of the observer, On Area II brood counts were made until July 17 at which 
time the observer terminated his study in order to begin a banding program. 
Table XX. - Brood Counts - ArealIl 

Species June 1 July 6 July 17 Total Production * 
Mallard 1 4, 1 5 
Pintail 5 17 9 20 
Baldpate - 4 4 8 
Blue-winged teal - - 4 4 
Shoveler - 6 1 7 
Canvasback - 1 1 Z 
Total 6 32 20 46 
* Total production equals brood count of July 6 plus Class LA broods 
of July 17. 
With a breeding population of 313 pairs and only 46 broods available on July 17, 
a mere 14,7 percent of the breeding pairs succeeded in bringing off broods, However, 
if it had been possible for this area to be checked as closely as Areas III and IV and 
for as long a time, this figure would undoubtedly have been considerably higher. 
Table XXI. - Brood Counts - Area III 

Species June 1 July 1 August 1 Total Production 
Mallard 2 5 12 15 
Pintail - 1 2 3 
Baldpate - 1 il ll 
Gadwall - - 6 6 
Blue-winged teal - 1 44 44 
Green-winged teal - 1 3 4 
Shoveler - - 2 2 
Redhead - - 3 3 
Canvasback - Uh 8 8 
Scaup - - 16 16 
Ruddy - - 13 13 
Bufflehead - - 1 1 
. Unidentified - 2 - - 
Total 2 l2 121 126 
Coot in x 37 37 
Total production on this area was computed by adding broods seen on August 1 
to those seen on June 1 as well as those Class II or III broods seen on July 1 and 
considered able to fly by August 1, The breeding population was considered to be 
358 pairs. A brood count of 126 broods represents a pair success of 35,2 percent — 
which compares not too favorably with the nest success of 47.4 percent. | 
