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Science (New York, N.Y.)|February 22, 1974
Temporal pattern shifts to avoid acoustic interference in singing birdsR W Ficken, M S Ficken, J P HailmanZeitschrift Fur Tierpsychologie|January 1, 1978
Differential aggression in genetically different morphs of the white-throated sparros (Zonotrichia albicollis)R W Ficken, M S Ficken, J P HailmanPageof 1