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Acadian Flycatcher
Acadian Flycatcher
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Clade: Inopinaves
Order: Passeriformes
Suborder: Tyranni
Infraorder: Tyrannides
Parvorder: Tyrannida
Family: Tyrannidae
Subfamily: Fluvicolinae
Genus: Empidonax
Species: E. virescens
Binomial name
Empidonax virescens
(Vieillot, 1818)

The Acadian Flycatcher, Empidonax virescens is a species of flycatcher in Tyrannidae and Empidonax.

Other names[]

Green-crested flycatcher, green flycatcher, small pewee [2].


It has the largest wings and the longest and broadest bill of any empid [3].

Olive above, with yellow eye ring, two buffy or whitish wing bars; very long primary projection. Long, broad-based bill, with mostly yellowish lower mandible. Most birds show pale greyish throat, pale olive wash across upper breast, white lower breast, yellow belly and undertail coverts [4].

It moults before fall migration and fall birds have buffy wingbars [4].

Juvenile is brownish-olive above and edged with buff [4].

A male [5], in May, 13.7 gr., or about ½ oz., and had 1,554 body (contour) feathers [2].

Similar species[]

Main article: Differentiating the Empidonax flycatchers

It is easily confused with other empids, however, its voice can be used to differentiate between the species.

It is similar to the yellow-bellied flycatcher. However, the latter shows a more extensive olive wash across the breast and down the sides; lacks a pale area between the olive and the yellow belly; and has a more yellowish throat. [4].

It differs in plumage from other members by its brighter green upperparts and whiter underparts [3].


It flips its tail up [4].


Eats a variety of flying insects and dashes out to catch them [6]. Also appears to eat meal worms [6].


Call is a soft peace, extended into song to an emphatic pee-tsup, accented on the first syllable. On breeding grounds, it also gives off a flicker like ti ti ti ti ti [4].


Monogamous. Nest is a sloppy cup nest made from sticks, grass, dried stems, bits of bark and cobwebs; nest is lined with grass, hair, and plant down and placed on a horizontal well away from the trunk [6]. Female incubates for 13-15 days [6].


Breeds in mature forests, often near water; winters in lowland forest or shady plantations [3]. Also found in deciduous forests, ravines, swampy woods, beech groves [7].

It is found in North Americana and migrates to Central and South Americana (winters in Costa Rica to Ecuador [7]).


  1. ^ BirdLife International (2008). Empidonax virescens. In: IUCN 2008. IUCN Red List of Threatened Species. Downloaded on 28 February 2011.
  2. ^ a b Terres, John K. (1980). The Audubon Society Encyclopedia of North American Birds. Alfred A. Knopf, Inc. ISBN 0394466519. 
  3. ^ a b c France, Peter; et al. (2007). Bird: The Definitive Visual Guide. Dorling Kindersley Inc. ISBN 9780756631536. 
  4. ^ a b c d e f Dunn, Jon L. and Alderfer, Jonathan (2006). National Geographic Guide to the Birds of North America. National Geographic Society. ISBN 1426200722. 
  5. ^ Wetmore, A. 1936. The number of contour feathers in passeriform and related birds. Auk 53:159-169
  6. ^ a b c d Dick, Gary Owen (2002–2007). "Acadian Flycatcher Behavior". What Bird. Waite, Mitch. Retrieved February 28, 2011. 
  7. ^ a b Peterson, Roger Tory and Peterson, Virginia Marie (1980). A Field Guide to the Birds East of the Rockies. Houghton Mifflin Company. ISBN 039526619X. 


External links[]