Annotated checklist of the birds of Ontario /

Abstract

Gannet, Morus bassanus (Linnaeus). Occasional; rare visitant in south. Dates in province: 15 September-5 May (25 June). Most are immature birds. 30&c. /<?S£> SuA/Sif/vi 19. Great Cormorant, Phalacrocorax carbo (Linnaeus). Accidental; one specimen (rom 34423): Toronto, 21 November 1896 (Fleming, 1900). P. c. carbo. ty /^AVpYB /&r>f C/^ec/s? 20. * Double-crested Cormorant, Phalacrocorax auritus (Lesson). Locally common summer resident at Lake of the Woods, along shores of the Great Lakes, Lake Abitibi, formerly on James Bay; one record at Fort Severn (Manning, 1952). Rare winter resident on Great Lakes. Uncommon migrant. Principal dates in province: 10 April-25 November. Egg dates: 13 May-21 June. P. a. auritus. 21. Anhinga, Anhinga anhinga (Linnaeus). Accidental; two specimens (second specimen missing): ummz 91960, Garden River (Algoma District), 1881 (Van Tyne, 1950); West Lake (Prince Edward County), 7 September 1904 (Snyder, 1941). A. a. leucogaster. 22. [Magnificent Frigate-bird, Fregata magnificens Mathews. Hypothetical; one sight record: Port Rowan (Norfolk County), October 1949 (Baillie, 1950b).] 23. *Great Blue Heron, Ardea herodias Linnaeus. Common summer resident across province, north to Sandy Lake, Moosonee; records north to Fort Severn, Fort Albany. Rare winter resident in south (north to Manitoulin Island). Common migrant. Principal dates in province: 30 March-28 November. Egg dates: 15 April-9 June. A. h. herodias. 24. *Green Heron, Butorides virescens (Linnaeus). Common summer resident in south (north to Barrie, Ottawa); occasional, rare to North Bay. Accidental in winter in south (Cruickshank, 1965). Uncommon migrant. Dates in province: 15 April-15 October (27 October). Egg dates: 9 May-25 June. B. v. virescens. 25. Little Blue Heron, Florida caerulea (Linnaeus). Occasional; rare visitant in south with sightings north to Thunder Bay, Sudbury, Ottawa. Accidental at Winisk. Dates in province: every month except January and February. F. c. caerulea. 26. * Cattle Egret, Bubulcus ibis (Linnaeus). Uncommon local summer resident in south (north to Kingston); occasional, rare north to Thunder Bay, Algoma District, Ottawa. Uncommon migrant. Dates in province: (2 April) 26 April-17 November. Egg dates: 4-13 June. B. i. ibis. 27. *Great Egret, Casmerodius albus (Linnaeus). Uncommon summer resident in extreme south (Essex County) ; occasional, rare north of breeding range in late summer (to Simcoe and Leeds counties), Sault Ste. Marie, Kapuskasing, Winisk. Casual; rare in winter in extreme south. Rare migrant. Dates in province: 28 March-30 September (11 November). Egg date: 10 May. C. a. egretta. 28. Snowy Egret, Egretta thula (Molina). Occasional; rare visitant in south (north to Orillia, Bruce Peninsula, northeast to Kingston); accidental in north (specimen from mouth of the Attawapiskat River, May 1971). Dates in province: 16 April-28 October. E. t. thula. 29. Louisiana Heron, Hydranassa tricolor (Miiller). Accidental; one photographic record: Rondeau Park, 21 April 1974; also eight sight records in extre...