South American Migrant Swallows of the Genus Progne in Panama and Northern South America: with Comments on Their Identification and Molt

Authors

E. Eisenmann

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Recommended Citation

Eisenmann, E. (1959) "South American Migrant Swallows of the Genus Progne in Panama and Northern South America: with Comments on Their Identification and Molt," The Auk: Vol. 76: Iss. 4, Article 26.
Available at: https://digitalcommons.usf.edu/auk/vol76/iss4/26