Geographic variation in Black-capped Chickadee songs and singing behavior
Journal or Book Title
Kroodsma, DE; Byers, BE; Halkin, SL; Hill, C; Minis, D; Bolsinger, JR; Dawson, JA; Donelan, E; Farrington, J; Gill, FB; Houlihan, P; Innes, D; Keller, G; Macaulay, L; Marantz, CA; Ortiz, J; Stoddard, PK; and Wilda, K, "Geographic variation in Black-capped Chickadee songs and singing behavior" (1999). AUK. 97.
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