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Archive for September 10, 2012

Great Egret & Post-breeding Dispersal

Although Great Egrets (Ardea alba) do breed sporadically as far north as Vermont, seeing one in northern New England is always noteworthy. The likelihood of a sighting increases as summer progresses, due in large part to the phenomenon of post-breeding dispersal. After young Great Egrets have fledged, individuals wander well outside their typical breeding range, as far north as southern Canada. The northward dispersal of juvenile birds peaks in August and September. (This Great Egret is about to dine on a crayfish.)