This species is abundant and widespread in Canada. The Breeding Bird Survey shows little overall change in the population since 1970, suggesting that there is little current conservation concern. Wintering populations, primarily in the West Indies, appear to be adapted to a broad range of habitats and may be less vulnerable to deforestation than other neotropical migrants (Morton 1992). This species has been identified as a priority for conservation and/or stewardship in one or more Bird Conservation Region Strategies in Canada.
As an interior forest species, population densities of Black-throated Green Warbler are known to decrease in fragmented forests and some management practices such as pre-commercial thinning may be detrimental (Morse and Poole 2005). The species may be somewhat vulnerable to deforestation in the tropics, however, its occupation of a broad range of habitats, its high intraspecific tolerance and its omnivorous feeding habitats may ensure its adaptability to changes that occur there (Morton 1992). Population models suggest that loss of old growth forest in western Canada and forest fragmentation due to forestry practices could be detrimental to this species (e.g., see Boreal Avian Modelling Project).
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:
Select any of the sub-regions below to view the BCR strategy for additional details.
