Blue-winged Teal
(Spatula discors)

Summary

Picture of bird
© Jukka Jantunen (flickr.com/photos/jukka_jantunen)
For additional photos and vocalizations, visit Dendroica. (Link opens in a new window.)

The Blue-winged Teal breeds throughout much of Canada, with its core breeding range located in the Prairie Potholes region. While its population has been significantly increasing since the early 1990s, the number of breeding pairs in southern Ontario and Quebec has shown a slow decline over the last two decades, following more dramatic declines between the early 1970s and the mid-1990s. Agricultural development and habitat destruction in eastern Canada are possible reasons for the species’ population decline. Consequently, restrictive regulations have been implemented in Quebec, although the harvest across Canada has remained relatively stable since the 1980s. Generally, fewer Blue-winged Teals are harvested in Canada compared to Green-winged Teals. This species has been identified as a priority for conservation and/or stewardship in one or more Bird Conservation Region Strategies in Canada.

Designations

Main designations for the species
DesignationStatusDateSubspecies, population
IUCN (Global)Least concern2018 
Wild Species (Canada)Secure2015 
Bird Conservation Region StrategyPriority Species2013 

Population status

Geographic area or populationPopulation change relative to ~1970ReliabilityStatus in relation to goal
CanadaModerate IncreaseHighNot Applicable
Western CanadaModerate IncreaseHighAt an Acceptable Level
Eastern Canada Moderate DecreaseHighAt an Acceptable Level
 

Population estimate

Geographic area or populationPopulation estimate
Canada1,000,000 - 5,000,000 birds
 

Distribution maps

 

Migration strategy, occurrence

Long-distance migrant

Responsibility for conservation

Geographic areaResponsibility based on % of global population
CanadaHigh

General nesting period in Canada

Nesting period starts between late April and late May and ends between mid-July and late July, depending on the region. Before or after this period, the probability of an active nest is lower.
 

Conservation and management

The population status of the Blue-winged Teal is greatly influenced by wetland conditions on the Prairie breeding grounds. In eastern Canada, the intensification of agriculture and the increased destruction of favourable habitat in recent decades are thought to be the main factors responsible for the decline of the Blue-winged Teal in Quebec and Ontario (Ross 2010, Brousseau and Lepage 2013).

 

Bird conservation region strategies

Environment and Climate Change Canada and partners have developed Bird Conservation Region Strategies in each of Canada’s Bird Conservation Regions (BCRs). In these strategies, selected species are identified as priorities for one or more of the following reasons:

  • conservation concerns (i.e., species vulnerable due to population size, distribution, population trend, abundance, or threats)
  • stewardship responsibilities (i.e., species that typify the regional avifauna or have a large proportion of their range or population in the sub-region)
  • management concerns (i.e., species that require ongoing management because of their socio-economic importance as game species, or because of their impacts on other species or habitats)
  • other concerns (i.e., species deemed a priority by regional experts for other reasons than those listed above or because they are listed as species at risk or concern at the provincial level)

Select any of the sub-regions below to view the BCR strategy for additional details.

BCRs, marine biogeographic units, and sub-regions in which the species is listed as a priority
RegionSub-region and priority type
Boreal Softwood ShieldBoreal Softwood Shield, sub-region and priority type: Quebec -- Other
Boreal Taiga PlainsBoreal Taiga Plains, sub-region and priority type: Prairie and Northern -- Conservation
Lower Great Lakes/St. Lawrence PlainLower Great Lakes/St. Lawrence Plain, sub-region and priority type: Ontario -- Conservation
Lower Great Lakes/St. Lawrence PlainLower Great Lakes/St. Lawrence Plain, sub-region and priority type: Quebec -- Other
Northern Pacific RainforestNorthern Pacific Rainforest, sub-region and priority type: Pacific and Yukon -- Other
Northwestern Interior ForestNorthwestern Interior Forest, sub-region and priority type: Pacific and Yukon -- Other
Prairie PotholesPrairie Potholes, sub-region and priority type: Prairie and Northern -- Other
 

References