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Ecological Studies at the Woodworth Study Area

AN INTRODUCTION TO THE WOODWORTH STUDY AREA

Table 2

Table 2. Average number of indicated breeding pairs (1965-89), nests (1966-81), and broods (1965-81) of ducks on Woodworth Study Area.

	                                                                                        
 Species                            Pairs         Nests         Broods
	                                                                                                                                                            

Mallard (Anas platyrhynchos)         52             26            13
Gadwall (A. strepera)                64             43            21
American Wigeon (A. americana)       10              4             3
Green-winged Teal (A. crecca)         8              4             3
Blue-winged Teal (A. discors)       211            133            74
Northern Shoveler (A. clypeata)      30             12             7
Northern Pintail (A. acuta)          27             15             7
Redhead (Aythya americana)           26            NA1             4
Canvasback (A. valisineria)          10            NA1             3
Lesser Scaup (A. affinis)            30             31             4
Ruddy Duck (Oxyura jamaicensis)      25	           NA1             8

¹Redheads, canvasbacks, ruddy ducks, and some lesser scaup nest over water, where nest searches were not conducted.

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