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Distribution and Abundance of Predators that Affect
Duck Production: Prairie Pothole Region

Appendix

Table 14. Species composition (%) of large hawks in study areas in the prairie pothole region; based on daily tabulations of sightings of large hawks, 1983-88.

Area^a			Year	Sightings (N)	Percentage of Total Observations
Area^a			Year	Sightings (N)	Northern Harrier	Swainson's Hawk	Red-tailed Hawk	Ferruginous Hawk
Canada
	Alberta
		Gayford	1985	324	11	64	25	0
		Hay Lakes*	1983	133	45	8	47	0
		Hay Lakes*	1984	257	8	18	74	0
		Holden*	1983	230	39	10	50	0
		Penhold*	1984	204	22	13	62	3
		Penhold*	1985	101	10	36	54	0
	Manitoba
		Cartwright	1983	63	41	30	29	0
		Moore Park*	1983	94	46	26	29	0
		Moore Park*	1984	409	27	8	65	0
	Saskatchewan
		Ceylon	1983	236	53	46	0	1
		Ceylon	1984	204	39	59	0	2
		Craik	1984	94	73	21	5	0
		Craik	1985	148	41	45	13	1
		Denzil	1984	257	32	48	19	2
		Denzil	1985	464	33	36	29	2
		Earl Grey*	1985	145	28	50	19	3
		Goodwater	1983	307	61	37	0	3
		Hanley*	1983	128	51	25	24	0
			1984	207	65	8	26	1
			1985	262	52	27	20	1
		Inchkeith*	1984	269	16	32	52	0
		Inchkeith*	1985	202	14	39	47	0
		Leask*	1984	271	41	10	48	0
		Leask*	1985	299	28	3	69	0
		Shamrock	1983	305	47	47	0	6
			1984	250	36	61	0	3
			1985	165	44	53	0	2
		Yorkton*	1985	183	18	2	80	0
United States
	Minnesota
		Hawley*	1987	118	6	0	91	0
		Hawley*	1988	138	18	0	80	0
		Hitterdal*	1988	234	55	0	41	0
		Lake Park*	1987	89	38	0	62	0
		Lake Park*	1988	188	51	0	44	0
	Montana
		Morgan	1983	227	41	42	0	17
		Plentywood	1983	125	60	40	0	0
	North Dakota
		Courtenay	1988	130	60	25	15	0
		Eldrige	1987	105	22	63	13	0
		Eldrige	1988	175	49	32	15	2
		Fredonia	1987	718	69	19	<1	11
		Fredonia	1988	566	69	18	2	11
		Jud	1987	228	51	41	4	4
		Jud	1988	206	50	36	9	5
		Kulm	1988	1074	52	35	8	5
		Litchville	1987	140	12	74	14	0
		Litchville	1988	205	30	44	24	0
		Plaza	1983	69	76	17	1	6
		Sharon	1983	71	31	56	13	0
		Streeter	1983	133	41	29	0	30
	South Dakota
		Hosmer	1983	99	30	26	8	35
		Madison	1983	30	17	70	13	0
		Parkston	1983	44	2	71	27	0

^aStudy areas denoted with an asterisk (*) are in the aspen parkland, all others are in the prairie.

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Distribution and Abundance of Predators that Affect Duck Production: Prairie Pothole Region

Appendix

Distribution and Abundance of Predators that Affect
Duck Production: Prairie Pothole Region