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editDoes anyone have a source for the statement that Bushtits are the only western U.S. birds to hang upside for "extended" times? Seems to me nuthatches and chickadees do that too. —JerryFriedman 22:16, 28 February 2006 (UTC)
Upside down
editI'm with Jerry. Nuthatches (in the Pacific North West) spend as much or more time upside down as bushtits.