The pine flycatcher (Empidonax affinis) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in the montane tropical and subtropical coniferous forests of Mexico and southwestern Guatemala. A vagrant bird found in the Santa Rita Mountains, Arizona, in late May 2016 is the first record north of Mexico. (An erroneous 2009 record from Choke Canyon State Park in southern Texas  was later shown to be a misidentified Least Flycatcher.)
- BirdLife International (2012). "Empidonax affinis". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013.
- Edwards, Ernest Preston; Butler, Edward Murrell (1998). A Field Guide to the Birds of Mexico and Adjacent Areas: Belize, Guatemala and El Salvador. University of Texas Press. p. 104. ISBN 978-0-292-72091-6.
- "Rare 'dinky' bird migrates to US for first time". Yahoo! News. Yahoo! Inc. Associated Press. 9 January 2009. Archived from the original on January 20, 2009. Retrieved 2009-01-09.
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