
Waterfowl Breeding Pair Survey - Streams (160 Linear Miles) 

Pairs Prs./Linear Mile Percent 
Species 1956 1957 1956 1957: >» Change 
Mallard 26 16 ~16 ~10 -38 
Black Duck 3 3 02 02 Same 
Blue-winged Teal ] ] -O1 0) Same 
Wood Duck 114 121 tl 76 Fate 
Total 144 141 «90 89 ase 
Wood Duck Nest Box Checks (State-wide) 
No. Boxes No. Boxes No. Percent of 

Area of In- Checked - Usable Boxes Used Utilization 
spection 1956 1957 1956 1957 1956 1957---1956:- 1957 
District #2 258 216 258 210 63 41 24,42 19,52 
District #3 134 115 125 104 28 19 22.40 18.27 
District #4 308 305 261 248 20 20 7.66 8.06 
District #5 288 263 246 228 32 39 13.01 17.11 
District #6 179 213 160 120 31 36 19.38 30.00 
Magee Marsh 185 116 185 116 11 21 6.00 18.10 
Delaware Dam 87 80 87 77 16 23 18.40 29.87 
Woodbury Area 19 19 19 19 17 16 89.47 84.21 
Total 1458 1327 134] 1122 218 215 16.26 19.16 

Production Indices 
The following tables present the data collected during the 
1957 production surveys: 
