Connecticut Warblers nest in the northern boreal forests, migrate through the Midwest, and winter in the rainforests of South America. Even with all that traveling, you rarely see one of these birds. Though their loud, ringing song might be easy to identify, it often seems to emanate from low in a tree when the warbler is perched high in the crown, frustrating birders from Canada to Brazil.

More info and transcript at BirdNote.org. 

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