MISSISSIPPI FLYWAY 
Aerial Brood and Late Nesting Indices - Southern Manitoba, July, 1956. 
Continued - 



Broods Species Stratum A Stratum B __—s«— Provincial Totals 
Redhead 2,100 900 3,000 
Ringneck Ne 300 | | 300 
Ruddy Duck > 4,800 _ 1,400 — | 6, 200° 
Subtotal - Divers 10, 000 ——-2, 300 12,300. 
Grand Total = 35,600 11; 200 46, 800° 
Coot Broods 1,200 400 1,600 . 
Pond Index | 425,900 | 411,600 837,500 

Comparison of Aerial Brood and Late Nesting Indices - 1955 and 1956 





1955 1956 Percent Change. 
Broods Not Speciated 22,800 24,900 + 9.2 
Species — 
Pintail 1,900 2, 700 
Mallard 22,000 - 18,600 
Late Baldpate 1,900 1,500 
Nesting Shoveler 1,000 1,500 
Indices -Gadwall 500 900 
Blue-winged Teal 6,400 7,100 
Green-winged Teal - 2,200 
Subtotal - Puddlers 33, 700 34,500 + 2.4 
Scaup 1, 200 2,200 
Canvasback 2,500 600 
Redhead 1,900 3, 000 
- Ringneck — 2,300 300 
Ruddy Duck 7, 700 6,200 . 
Subtotal - Divers = ~—s*«i15, 600 12,300 292 

Continued -- 
