Population status

Ring-necked Duck
(Aythya collaris)

The Ring-necked Duck is pimarily monitored on its core breeding range through the Waterfowl Breeding Population Habitat Survey, and the Eastern Waterfowl Breeding Ground Survey, as well as the Waterfowl Breeding Population Survey of the Central Interior Plateau of British Columbia. The species is also monitored by other small-scale regional breeding waterfowl surveys across Canada, including the Southern Ontario Waterfowl Plot Survey. Ring-necked Duck numbers in the Prairies and Western Boreal Forest have been increasing since the 1990s, contributing to the overall increase in the national population. However, in eastern Canada the population has remained stable. Each Ring-necked Duck population has a national population goal; both populations are at an acceptable level relative to their respective goals. 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
CanadaNot applicableNot applicableNot applicable
Eastern PopulationLong-term average of the time series10th percentile of observed abundance (1970-2012)Not applicable
Western PopulationLong-term average of the time series10th percentile of observed abundance (1970-2012)Not applicable

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 1: Population trends by geographic area
Geographic areaTime PeriodAnnual trend Table 1 - footnote 1   Table 1 - 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-States1955-20173.52.34.1
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-States1955-20173.93.24.6
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-States1955-20173.83.34.3
 

British Columbia Coastal Waterbird Survey

Additional information on: British Columbia Coastal Waterbird Survey

Table 2: Population trends by geographic area
Geographic areaTime PeriodAnnual Trend Table 2 - footnote 1 Limits
LowerUpper
British Columbia coast1999-20169.83.415.9
 

Cooperative Yukon roadside Waterfowl Breeding Population Survey

Additional information on: Cooperative Yukon roadside Waterfowl Breeding Population Survey

Table 3: Population trends by geographic area
Geographic areaTime PeriodAnnual trend Table 3 - footnote 1   Table 3 - footnote 2 Limits
LowerUpper
Southern Yukon Select to view graph of the geographic area: Southern Yukon 1991-2016; Cooperative Yukon roadside Waterfowl Breeding Population Survey1991-20160.1-0.80.1
 

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 4: Population trends by geographic area
Geographic areaTime PeriodAnnual trend Table 4 - footnote 1   Table 4 - footnote 2 Limits
LowerUpper
British -Columbia Central Plateau2006-2017-0.9-3.21.5
 

Southern Ontario Waterfowl Plot Survey

Additional information on: Southern Ontario Waterfowl Plot Survey

Table 5: Population trends by geographic area
Geographic areaTime PeriodAnnual trend Table 5 - footnote 1   Table 5 - footnote 2 Limits
LowerUpper
Southern Ontario Select to view graph of the geographic area: Southern Ontario 1971-2017; Southern Ontario Waterfowl Plot Survey1971-20174.818.3
 

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 Survey1985-20163.70.47.2
 

Eastern Waterfowl Breeding Ground Survey

Additional information on: Eastern Waterfowl Breeding Ground Survey

Table 7: Population trends by geographic area
Geographic areaTime PeriodAnnual Trend Table 7 - footnote 1 Limits
LowerUpper
Eastern survey core area Select to view graph of the geographic area: Eastern survey core area 1990-2017; Eastern Waterfowl Breeding Ground Survey1990-20170.1-0.60.8
Atlantic Highlands Select to view graph of the geographic area: Atlantic Highlands 1990-2017; Eastern Waterfowl Breeding Ground Survey1990-20170.6-0.92.2
Eastern Boreal Shield Select to view graph of the geographic area: Eastern Boreal Shield 1990-2017; Eastern Waterfowl Breeding Ground Survey1990-20170.1-0.91.2
Central Boreal Shield Select to view graph of the geographic area: Central Boreal Shield 1990-2017; Eastern Waterfowl Breeding Ground Survey1990-20170.2-0.91.3
Western Boreal Shield Select to view graph of the geographic area: Western Boreal Shield 1990-2017; Eastern Waterfowl Breeding Ground Survey1990-20170-1.41.4
 

References