Family Tyrant-flycatchers (Tyrannidae)

Least Concern

Euler's Flycatcher (Lathrotriccus euleri)


French: Moucherolle d’Euler German: Eulerschnäppertyrann Spanish: Mosquero de Euler

Empidochanes Euleri


, 1868,

Cantagalo, Rio de Janeiro, Brazil


If species included in Empidonax, name flaviventris becomes preoccupied, and must give way to johnstonei for Grenada birds; those from Trinidad also, independently, named flaviventris (by same author, in same year, but in different genus), but this name, preoccupied in both Empidonax and Lathrotriccus, gives way to lawrencei. Five subspecies recognized.

Subspecies and Distribution
  • L. e. flaviventris (Lawrence, 1887) – Lawrence's Flycatcher – Grenada, in S Windward Is (probably extinct).
  • L. e. lawrencei (J. A. Allen, 1889) – E Colombia, W & N Venezuela, Trinidad, locally in the Guianas.
  • L. e. bolivianus (J. A. Allen, 1889) – S & SE Venezuela, E Ecuador, E Peru, much of Brazil (except N & SE) and NW Bolivia; some possibly migrate to Colombia.
  • L. e. argentinus (Cabanis, 1868) – C & E Bolivia, N & NE Argentina and Paraguay; migrates N into Amazonia of E Peru and E Brazil.
  • L. e. euleri (Cabanis, 1868) – Euler's Flycatcher – SE Brazil, NE Argentina and Uruguay; migrates N into Amazonia of NE Peru, Bolivia and Brazil.
  • Descriptive notes

    12·7–13·5 cm; 9–13·8 g. Generally drab, similar to some Empidonax species, but browner above and buffier wingbars. Nominate race has... read more


    Song an abrupt and buzzy “fééú! pe’pe’pe’p’p”, first note loudest and second part descending scale... read more


    Lower levels of moist and humid forest, secondary growth, and open forest borders; sometimes in... read more

    Food and feeding

    Arthropods, especially beetles (Coleoptera), ants (Hymenoptera), homopteran bugs (planthoppers and cicadas), and assorted dipterans,... read more


    Breeds May–Jul in Trinidad, Sept–Nov in Brazil and Oct–Nov and Jan in Argentina. Nest a cup lined with soft black fibres... read more


    Mainly resident. Race argentinus and S populations of nominate migrate N into Amazonia... read more

    Status and conservation

    Not globally threatened. Uncommon to locally common; becomes less numerous and widespread in N part of range, e.g. much more scarce in Colombia and Ecuador. Grenada race (... read more

    Recommended citation

    Farnsworth, A. & Lebbin, D. (2019). Euler's Flycatcher (Lathrotriccus euleri). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 13 December 2019).