the western wood-pewee , contopus sordidulus , is a small tyrant flycatcher .
adults are gray-olive on the upperparts with light underparts , washed with olive on the breast .
they have two wing bars and a dark bill with yellow at the base of the lower mandible .
this bird is very similar in appearance to the eastern wood-pewee; the two birds were formerly considered to be one species .
the call of c .
sordidulus is a loud buzzy peeer; the song consists of three rapid descending tsees ending with a descending peeer .
their breeding habitat is open wooded areas in western north america .
these birds migrate to south america at the end of summer .
the female lays two or three eggs in an open cup nest on a horizontal tree branch or within a tree cavity; california black oak forests are examples of suitable nesting habitat for this species of bird .
both parents feed the young .
they wait on a perch at a middle height in a tree and fly out to catch insects in flight (hawking), sometimes hovering to pick insects from vegetation (gleaning) .
