University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Faculty Publications, Department of Psychology Psychology, Department of 2003 GEOGRAPHIC VARIATION IN SONG OF THE BRIGHT-RUMPED ATTILA (TYRANNIDAE: ATTILA SPADICEUS): IMPLICATIONS FOR SPECIES STATUS Daniel Leger University of Nebraska-Lincoln,
[email protected] D. James Mountjoy Knox College Follow this and additional works at: https://digitalcommons.unl.edu/psychfacpub Part of the Psychiatry and Psychology Commons Leger, Daniel and Mountjoy, D. James, "GEOGRAPHIC VARIATION IN SONG OF THE BRIGHT-RUMPED ATTILA (TYRANNIDAE: ATTILA SPADICEUS): IMPLICATIONS FOR SPECIES STATUS" (2003). Faculty Publications, Department of Psychology. 477. https://digitalcommons.unl.edu/psychfacpub/477 This Article is brought to you for free and open access by the Psychology, Department of at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Faculty Publications, Department of Psychology by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. The Auk 120(1):69–74, 2003 GEOGRAPHIC VARIATION IN SONG OF THE BRIGHT-RUMPED ATTILA (TYRANNIDAE: ATTILA SPADICEUS): IMPLICATIONS FOR SPECIES STATUS DANIEL W. LEGER1,3 AND D. JAMES MOUNTJOY2 1Nebraska Behavioral Biology Group and Department of Psychology, University of Nebraska, Lincoln, Nebraska 68588-0308, USA; and 2Department of Biology, Knox College, Galesburg, Illinois 61401, USA ABSTRACT.—Bright-rumped Attilas (Attila spadiceus) have two song forms, one sung primar- ily at dawn, the other primarily during the rest of the day. Both songs consist of a main phrase and an optional terminal phrase. Our recordings of dawn and day songs in Costa Rica were very similar to those made elsewhere in Central America. However, Central American dawn songs were signifi cantly different than dawn songs from South America, both in terms of quantitative features (temporal and frequency variables) and qualitative characteristics (note shape).