This video from the USA says about itself:
From Wildlife Extra:
North American Birds Moving North as the Globe Warms
Alan Hitch, a doctoral student with AU’s School of Forestry and Wildlife Sciences, along with his master’s degree advisor, Paul Leberg, studied the breeding ranges of 56 bird species using data collected by the North American Breeding Bird Survey, a long-term, large-scale, international avian monitoring program initiated in 1966 to track the status and trends of North American bird populations.
‘Our results add to an increasing body of scientific research documenting the effects of global climate change,’ Hitch said. ‘It also raises questions about whether northward shifting ranges could be detrimental to some species.’
Arboreal and Semi-Arboreal Birds
Hitch and Leberg concentrated their study on arboreal and semi-arboreal birds, types of birds that primarily live in backyards or forests and eat seeds or insects, living east of the Rocky Mountains such as the Common Ground-dove, Bachman’s Sparrow, Northern Mockingbird, Bewick’s Wren and the Golden-winged Warbler among others.
ScienceDaily (Mar. 26, 2012) — The chirpy buzz of the golden-winged warbler‘s song might not sound like a dirge, but it very nearly is one. The population of this little, gray songbird with bright yellow patches on its wings and head has been in precipitous decline since 1966. And, as of yet, it remains unprotected by the federal Endangered Species Act of 1973: here.
Bush’s lame duck climate ‘plan’: here.
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