Geographic Variation in the Song of Willow Flycatchers: Differentiation between Empidonax traillii adastus and E. t. extimus

✍ Scribed by James A. Sedgwick

• Book ID: 124675919
• Publisher: University of California Press
• Year: 2001
• Tongue: English
• Weight: 547 KB
• Volume: 118
• Category: Article
• ISSN: 0004-8038
• DOI: 10.2307/4089798