Wildlife Monographs

Red Fox Predation on Breeding Ducks
in Midcontinent North America

Tables

Table 5. Percentage hens among dabbling ducks found at red fox rearing dens east and west of the Missouri River in North Dakota and South Dakota. Only species with 10 or more individuals of known sex are included.

		1968		1969		1970		1971		1972		1973		Combined
Area & Species		%	N^a	%	N^a	%	N^a	%	N^a	%	N^a	%	N^a	%	N^a
West River
	Mallard	60	20	71	28	80	5							68	53
	Northern pintail	63	8	45	11	100	2							57	21
East River
	Mallard	86	22	81	58	81	67	77	26	74	35	87	31	81	239
	Northern pintail	80	10	74	109	77	97	67	33	60	47	88	16	73	312
	Northern shoveler	67	6	94	34	90	40	100	6	100	10	71	7	90	103
	Blue-winged teal	81	21	90	109	79	141	80	41	69	52	71	21	81	385
	Gadwall	50	2	82	28	59	32	58	12	55	29	67	18	64	121
	American wigeon	50	2	100	12	40	10					100	1	72	25
	Green-winged teal	75	4	86	14	73	11	0	1	0	1	67	3	74	34

^aTotal sex-identified ducks.

Wildlife Monographs

Red Fox Predation on Breeding Ducks in Midcontinent North America

Tables

Red Fox Predation on Breeding Ducks
in Midcontinent North America