Empidonax virescens
Acadian flycatchers are long-distance migrants who begin their spring migration in early March and their fall migration in mid-September.
Acadian flycatchers are small passerine birds, measuring 5.5 to 5.9 inches long and weighing 0.4 to 0.5 ounces, with an 8.7 to 9.1-inch wingspan.
Acadian flycatchers face future effects of climate change, like spring heat waves.
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