SPECIES

Pacific-slope Flycatcher Empidonax difficilis Scientific name definitions

Peter E. Lowther, Peter Pyle, and Michael A. Patten
Version: 1.0 — Published March 4, 2020
Text last updated October 4, 2016

Revision History

Birds of the World

  • Version  1.0

  • March 4, 2020
  • Pacific-slope Flycatcher Empidonax difficilis

Authors

Peter E. Lowther, Peter Pyle, and Michael A. Patten

Recommended Citation

Lowther, P. E., P. Pyle, and M. A. Patten (2020). Pacific-slope Flycatcher (Empidonax difficilis), version 1.0. In Birds of the World (P. G. Rodewald, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.pasfly.01


Birds of North America

  • Version  3.0

  • Full Revision
  • October 4, 2016
  • Pacific-slope Flycatcher Empidonax difficilis

Authors

Peter E. Lowther, Peter Pyle, and Michael A. Patten

Revisors

Peter E. Lowther, Peter Pyle, and Michael A. Patten

Recommended Citation

Lowther, P. E., P. Pyle, and M. A. Patten (2016). Pacific-slope Flycatcher (Empidonax difficilis), version 3.0. In The Birds of North America (P. G. Rodewald, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bna.pasfly.03

  • Version  2.0

  • Revision
  • January 1, 2000
  • Pacific-slope Flycatcher Empidonax difficilis

Authors

Peter E. Lowther

Revisors

Peter E. Lowther

Recommended Citation

Lowther, P. E. (2000). Pacific-slope Flycatcher (Empidonax difficilis), version 2.0. In The Birds of North America (A. F. Poole and F. B. Gill, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA.

Recommended Citation

Lowther, P. E. 2001. Pacific-slope Flycatcher (Empidonax difficilis) and Cordilleran Flycatcher (Empidonax occidentalis). In The Birds of North America, No. 556 (A. Poole and F. Gill, eds.). The Birds of North America, Inc., Philadelphia, PA. https://doi.org/10.2173/tbna.556.p


Handbook of the Birds of the World

Authors

Andrew Farnsworth and Daniel J. Lebbin

Recommended Citation

Farnsworth, A. and D. J. Lebbin (2014). Pacific-slope Flycatcher (Empidonax difficilis). In Handbook of the Birds of the World Alive (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Lynx Edicions, Barcelona.

Recommended Citation

Lowther, P. E., P. Pyle, and M. A. Patten (2020). Pacific-slope Flycatcher (Empidonax difficilis), version 1.0. In Birds of the World (P. G. Rodewald, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.pasfly.01