|Location||Canada, Yukon Territories|
|Central coordinates||139o 43.34' West 67o 57.04' North|
|IBA criteria||A4i, A4iii|
|Altitude||286 - 303m|
|Year of IBA assessment||2008|
Site description The Old Crow Flats are located in the northern Yukon about 125 km south of the Beaufort Sea. The Flats are located on a large, ancient lake bottom which is bordered by mountains on three sides and dotted with over 2,000 shallow lakes and ponds. With an area of over 617,000 ha, it is in many respects, an unique wetland system in the mostly mountainous landscape of the northern Yukon.
The Old Crow River and its tributaries wind through the flats in down-cut ravines that are well below the general level of the plain. Most of the habitat consists of lakes and ponds ringed with sedge marshes and shrub thicket habitats in the slightly drier areas.
Key Biodiversity The Old Crow Flats have been identified as an IBA primarily due to the large numbers of waterfowl that make use of the site for staging, breeding and moulting. During the summer, approximately 500,000 waterfowl make use of the area, more than any other site in the Yukon. The most abundant breeding species include White-winged and Surf Scoters (20-80,000), Greater and Lesser Scaup (50-100,000), and Northern Pintail (10-100,000). From a global perspective this translates into approximately 1.1% to 4.5% of the White-winged and Surf Scoter population, 0.83% to 1.65% of the Greater and Lesser Scaup population, and 0.4% to 4.0% of the Northern Pintail population.
Other waterfowl species that breed in this area in substantial numbers include Oldsquaw, Green-winged Teal, American Wigeon, swans, loons and grebes. Additional duck species also move into the Flats to moult, rest and feed prior to fall migration, especially Barrow's Goldeneye and Canvasback.
Two nationally threatened raptors breed in this area: the anatum subspecies of Peregrine Falcon (Threatened in Canada) and Short-eared Owl (Vulnerable in Canada). The Siberian Tit, a landbird with a very restricted range within Canada also occurs in this area.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Greater Scaup Aythya marila||breeding||1995||25,000 individuals||-||A4i||Least Concern|
|Surf Scoter Melanitta perspicillata||breeding||1995||10,000 individuals||-||A4i||Least Concern|
|Melanitta fusca||breeding||1995||10,000 individuals||-||A4i||Not Recognised|
|A4iii Species group - waterbirds||breeding||1995||50,000-99,999 individuals||unknown||A4iii|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Old Crow Flats||Special Management Area||769,747||protected area overlaps with site||520,000|
|Vuntut||National Park||440,000||protected area overlaps with site||210,000|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Wetlands (inland)||Freshwater marshes/swamps||-|
|Land-use||Extent (% of site)|
|nature conservation and research||-|
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Recommended citation BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Old Crow Flats. Downloaded from http://www.birdlife.org on 30/09/2016
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