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David Sibley

Lesser Canada Goose in the northeastern US

The primary challenge of distinguishing Canada from Cackling Goose centers on the intermediate-sized ‘Lesser’ Canada Goose, B. c. parvipes, which reportedly nests across the boreal forest regions of western Canada and interior Alaska (more details on my website here). I’ve seen a few birds that I thought were ‘Lesser’ in the northeast over the years,

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How many rare birds did we miss before the internet?

Yesterday morning I ‘found’ Canada’s first Lucy’s Warbler… in my inbox. After reading my recent posts about rare birds, Cathy Mountain (whose redpoll photos were featured here last winter) sent me a series of pictures of a warbler that had been in her yard in Fort McMurray, northern Alberta, from November 8-10, 2008. After rejecting

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Big Day, and Blogging hiatus

Upcoming events: I’ll be out on a fossil-fuel-free big day this coming weekend, bicycling around Concord, Massachusetts (hoping for 100 species) and I’ll try to post a report about that next week. You can sponsor me through Bird Studies Canada, or through Malkolm Boothroyd’s Bird Day Challenge. —————–========—————– The Blog: When I started this blog

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Border Fence puts Texas birds and birding at risk

Revised 8 Apr 2008 – Do something: Write or call Congress. See the No Texas Border Wall campaign and their suggestions for action with several petitions to sign and instructions for contacting government officials. Defenders of Wildlife has a handy form here for writing to your representative. ————————— The proposed border wall (1) from Texas

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Audubon’s mysteries: Carbonated Swamp-Warbler

One of the enduring mysteries of North American ornithology involves several species which were painted by Audubon in the early 1800s but never seen again. The most striking and appealing of these birds is the Carbonated Swamp-Warbler, and since the painting was published ornithologists have debated whether this could be a rare and now-extinct species,

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