Open AccessGeographic Variation in the Song of Willow Flycatchers: Differentiation between Empidonax traillii adastus and E. t. extimus
Author(s) -
James A. Sedgwick
Publication year - 2001
Publication title -
ornithology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.077
H-Index - 94
eISSN - 1938-4254
pISSN - 0004-8038
DOI - 10.2307/4089798
Subject(s) - willow , geographic variation , variation (astronomy) , geography , biology , ecology , demography , sociology , physics , population , astrophysics
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