Prothonotary warbler (Protonotaria citrea) COSEWIC assessment and status report: Appendix A

Appendix A

List of Important Areas Recently Known to Support Prothonotary Warblers in Ontario(1991-2005).
Region	Site name	UTM 10x10 km square (NAD83)	Maximum population in time period¹	History of occupancy	Ownership
Essex	Amherstburg	17LG25	3 pairs	Likely occupied annually since at least 2001	private
Essex	Holiday Beach	17LG35	4 pairs	Likely occupied annually since at least 1997	Essex Region CA; private
Essex	Hillman Marsh	17LG75	1 pair	Occupied ephemerally	Essex Region CA; private
Chatham-Kent	Rondeau Provincial Park	17MG27; 17MG28; 17MG38	15 pairs	Occupied annually at least since the 1930s	Ontario Parks
Norfolk	Hahn Woods (base of Long Point)	17NH31	5 pairs	Occupied more or less annually since the 1930s	CWS and private
Norfolk	Long Point (remote)	17NH71	1 pair	Occupied somewhat ephemerally in several scattered locations since at least the early 1980s.	CWS and private
Norfolk	Backus Woods	17NH42	5 pairs	Occupied in most years since the early 1980s	Long Point Region CA and private
Norfolk	Lower Big Creek	17NH41	3 pairs	Occupied regularly but somewhat ephemerally in several scattered locations since at least the 1930s	CWS and private
Hamilton-Wentworth	Dundas Marsh	17NH89	2 pairs	Occupied fairly regularly since the 1950s	Royal Botanical Gardens

¹ Together, these sites have the capacity to support over 40 pairs of Prothonotary Warblers.