the least flycatcher (empidonax minimus), (also called chebec , or chebecker , after the sound it makes), is a small insect-eating bird .
it is the smallest empidonax flycatcher in eastern north america .
the least flycatcher is between 5 and 5 34 inches (13 and 15 cm) long , with a 7 12 to 8 12 in (19 to 22 cm) spread .
it typically weighs around 11 grams (0.39 oz) .
adults have greyish-olive upperparts , darker on the wings and tail , with whitish underparts; they have a conspicuous white eye ring , white wing bars , a small , short bill and a short tail .
the breast is washed with grey and the sides of the belly with yellow .
it is similar in appearance to the larger eastern wood pewee .
their breeding habitat is open deciduous or mixed woods across canada and the northern united states .
they make a cup nest on a fork in a small tree .
these birds migrate to mexico and central america .
they wait on an open perch low or in the middle of a tree and fly out to catch insects in flight-(hawking), also sometimes picking insects from foliage while hovering (gleaning) .
they sometimes eat berries .
the song is a dry che-bec .
the call is a sharp whit .
