Dusky Flycatcher
(Empidonax oberholseri)

Summary

Picture of bird
© Chuck Kling
For additional photos and vocalizations, visit Dendroica. (Link opens in a new window.)

The Dusky Flycatcher nests in western Canada, from southern Yukon through British Columbia, to southwestern Alberta and in the Cypress Hills of Alberta and Saskatchewan. Breeding Bird Survey data for Canada indicate little overall change in abundance relative to the early 1970s . 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
CanadaLittle ChangeHighAt an Acceptable Level
 

Population estimate

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

Distribution maps

 

Migration strategy, occurrence

Long-distance migrant

Responsibility for conservation

Geographic areaResponsibility based on % of global population
CanadaModerate

General nesting period in Canada

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

Conservation and management

Logging may benefit the species by thinning dense coniferous stands or by opening up forests (Pereyra and Sedgwick 2015). However, the common forestry practice of removal of shrubs and other deciduous components by physical means or through use of herbicides will negatively affect this species (Easton and Martin 1998). In addition, this species may be subject to similar threats facing other aerial insectivore (see Nebel et al. 2010). There are reports of bad weather in spring causing severe adult mortality (Pereyra and Sedgwick 2015).

 

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
Great BasinGreat Basin, sub-region and priority type: Pacific and Yukon -- Conservation
Northern RockiesNorthern Rockies, sub-region and priority type: Pacific and Yukon -- Stewardship
 

References