[citation needed] A unique two-note song described as "ka-zeep" helps to identify this species.

Its breeding habitat is deciduous forests, often near water, across the eastern United States and southwestern Ontario.

They make a loose cup nest in a horizontal fork in a tree or shrub.

The Acadian flycatcher is an excellent flier; it is extremely maneuverable, can hover, and can even fly backward.

[5] As of October 2015 there have been 2 records of Acadian flycatcher in Europe, the first being a bird found dead in Iceland in 1967,[6] and the second a bird found on the beach at Dungeness in Kent, England in September 2015,[7] the latter's identity being established by DNA from its droppings.