Population status

Bufflehead
(Bucephala albeola)

The Bufflehead is primarily monitored in its core breeding range through the Waterfowl Breeding Population and Habitat Survey (WBPHS) in western Canada, and through the Eastern Waterfowl Breeding Ground Survey in eastern Canada. The species is also monitored in British Columbia by the Waterfowl Breeding Population Survey of the Central Interior Plateau of British Columbia and formerly by the Yukon Roadside Waterfowl Breeding Population Survey. The continental population of Buffleheads is estimated at more than 1.67 million individuals (North American Waterfowl Management Plan 2012), and is experiencing an increasing population trend in most surveyed areas since the 1960s, with the highest increase occurring in the Canadian Prairies. The Bufflehead  is at an acceptable level relative to its national population goal. Detailed information on the population status of waterfowl species is available in the Population Status of Migratory Game Birds in Canada report (summarized version). To obtain a copy of the full version of this report, including tables and graphs, please contact ec.scf-oismiggibiers-cws-miggamebirds.ec@canada.ca.

 

Population goal and acceptable levels of variation

Species/groupGoalLower levelUpper level
CanadaLong-term average of the time series10th percentile of observed abundance (1970-2012)Not applicable

British Columbia Coastal Waterbird Survey

Additional information on: British Columbia Coastal Waterbird Survey

Table 1: Population trends by geographic area
Geographic areaTime PeriodAnnual Trend Table 1 - footnote 1 Limits
LowerUpper
British Columbia coast1999-20161.2-0.43.2
 

Waterfowl Breeding Population and Habitat Survey in Western Canada and the Northwestern United-States

Additional information on: Waterfowl Breeding Population and Habitat Survey in Western Canada and the Northwestern United-States

Table 2: Population trends by geographic area
Geographic areaTime PeriodAnnual trend Table 2 - footnote 1   Table 2 - footnote 2 Limits
LowerUpper
Total survey area Select to view graph of the geographic area: Total survey area 1955-2017; Waterfowl Breeding Population and Habitat Survey in Western Canada and the Northwestern United-States1955-20172.21.92.4
Canadian Prairies Select to view graph of the geographic area: Canadian Prairies 1955-2017; Waterfowl Breeding Population and Habitat Survey in Western Canada and the Northwestern United-States1955-20173.433.9
Western Boreal Forest Select to view graph of the geographic area: Western Boreal Forest 1955-2017; Waterfowl Breeding Population and Habitat Survey in Western Canada and the Northwestern United-States1955-20171.91.62.2
 

Eastern waterfowl breeding ground survey

Additional information on: Eastern waterfowl breeding ground survey

Table 3: Population trends by geographic area
Geographic areaTime PeriodAnnual Trend Table 3 - footnote 1 Limits
LowerUpper
Total survey area Select to view graph of the geographic area: Total survey area 1990-2017; Eastern waterfowl breeding ground survey1990-20170.1-2.62.9
 

Cooperative Yukon roadside Waterfowl Breeding Population Survey

Additional information on: Cooperative Yukon roadside Waterfowl Breeding Population Survey

Table 4: Population trends by geographic area
Geographic areaTime PeriodAnnual trend Table 4 - footnote 1   Table 4 - footnote 2 Limits
LowerUpper
Southern Yukon Select to view graph of the geographic area: Southern Yukon 1991-2016; Cooperative Yukon roadside Waterfowl Breeding Population Survey1991-2016-0.2-1.8-0.4
 

Waterfowl Breeding Population Survey of the Central Interior Plateau of B.C.

Additional information on: Waterfowl Breeding Population Survey of the Central Interior Plateau of B.C.

Table 5: Population trends by geographic area
Geographic areaTime PeriodAnnual trend Table 5 - footnote 1   Table 5 - footnote 2 Limits
LowerUpper
British -Columbia Central Plateau2006-2017-0.5-2.61.5
 

Northwest Territories Boreal Waterfowl and Waterbirds Survey

Table 6: Population trends by geographic area
Geographic areaTime PeriodAnnual TrendLimits
LowerUpper
Northwest Territories Select to view graph of the geographic area: Northwest Territories 1985-2016; Northwest Territories Boreal Waterfowl and Waterbirds Survey1985-20163.30.26.8
 

References