Abstract
Covino, K. M., S. R. Morris, M. Shieldcastle, and P. D. Taylor. 2020. Spring migration of Blackpoll Warblers across North America. Avian Conservation and Ecology 15(1):17. https://doi.org/10.5751/ACE-01577-150117
Highlights
Blackpoll Warblers (Setophaga striata) are a quintessential Nearctic-Neotropical migrant that breeds throughout the boreal forests across North America and winters in South America (DeLuca et al 2013)
We use spring migration banding data on over 15,000 Blackpoll Warblers from 28 banding sites across North America to describe the details of the spring migration patterns in this species
These results indicate that birds migrating to western breeding sites differ in their migration speed and route compensating for the longer migratory distances traveled by western populations of Blackpoll Warblers compared to those breeding in eastern North America
Summary
Blackpoll Warblers (Setophaga striata) are a quintessential Nearctic-Neotropical migrant that breeds throughout the boreal forests across North America and winters in South America (DeLuca et al 2013). As a result of their breeding range, the distance traveled from their South American wintering grounds by Blackpoll Warblers breeding furthest west is twice that of those breeding in the eastern parts of their range (Morris et al 2016, DeLuca et al 2019) Despite these potentially interesting differences in migration patterns across the range of this species, the majority of studies have focused on a single site (e.g., Morris et al 1994, Dunn 2002, Bonter et al 2007, Holzschuh and Deutschlander 2016) until recently (DeLuca et al 2019). We hypothesized that, given Blackpoll Warblers typically migrate later than most other parulid migrants (Rodewald 2015), we would not see biologically meaningful changes in migration phenology across years
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