
MISSISSIPPI FLYWAY 
These high waters seemingly resulted in some loss of nests 
and eggs of the ground-nesting species. Some wood duck nest boxes were 
also inundated. 
The high water also restricted time of conducting surveys as 
well as the ability to actually see broods. It is believed that the number 
of broods recorded during 1957, particularly on the streams, is consider- 
ably below the actual number present. 
Breeding Population Indices 
The following tables present the data collected during the . 
1957 breeding population surveys and the wood duck nest box checks: 
Waterfowl Breeding Pair Survey - Magee Marsh (2,000 Acres) 
Pairs | Prs. Per Sq.Mi. Percent 
Species 1956 1957 1956 - 1957 Change 
Mallard 43 33 3.9 10.7 -23 
Black Duck 8 9 2.6 2.9 +13 
Blue-winged Teal 11 8 3.6 2.6 227 
Wood Duck 11 16 3.6 Bak +46 | 

Aerial Breeding Pair Survey - Lake Erie Marshes (80 Linear Miles) 
| | Pairs’ Prs.Per Sq. Mi. Percent) 
Species 1956 1957 1956 1957-. -Change 
Mallard 96 85 9.6 8.5 12 
Black Duck . 82 79 8.2 7.9 - 4 
Blue-winged Teal 12 8 1.2 8 -33 
Wood Duck 5 it 5D at +40 
Total — 195 179 19.5 17.9 - 8 
91 
