- any of an Old World family (Muscicapidae) of small passerine birds that catch insects in flight
- tyrant flycatcher
- Any of various Eurasian birds of the family Muscicapidae that feed on insects, usually catching the insects in flight.
- Any of various similar birds of the family Tyrannidae, found throughout the Americas. Also called tyrant flycatcher .
- Any of various similar birds of the Monarchidae family, found in Asia, Africa, and Australia, or the Ptilogonatidae family, found primarily in Central America.
- Macgillivray himself it was, apparently, who first detected the essential difference of the organs of voice presented by some of the New-World Passerines (subsequently known as Clarnatores), and the earliest intimation of this seems to be given in his anatomical description of the Arkansas Flycatcher, Tyrannus verticalis, which was published in 1838 (Ornithol.
- The scissor-tailed flycatcher, or Texas bird of paradise, is common on the prairies and in the lightly wooded districts.