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This Concept Map, created with IHMC CmapTools, has information related to: CMap 2.1 Development of Bird Song Learning, a young bird's "environment" including social environment", the young birds producing full songs. thereby Supportinng the "Acoustic Environment" Hypothesis, the genetic & developmental proximate (immediate) causes of song learning in birds are determined by an interplay, The "Genetic Differences" Hypothesis proposes that differences in song are the result of genetic differences, The Development of Bird Song Learning addresses the genetic & developmental proximate (immediate) causes of song learning in birds, an interplay between genes, Marler and his colleagues by taking eggs from white-crowned sparrow nests and hand-rearing them in the laboratory in 2 different acoustic environments in which one experiment the young birds were raised in "acoustic isolation"(so they could not hear adult male white-crowned sparrow songs), social environment" for which The "Social Interactions" Hypothesis, they could both see and hear adult male "tutor" strawberry finches (a different species) resulting in the young birds learning the song of the strawberry finch (not the song of the white-crowned sparrow), Baptista and Petrinovich placed young hand-reared white-crowned sparrows in cages, Marler and his colleagues by taking eggs from white-crowned sparrow nests and hand-rearing them in the laboratory in 2 different acoustic environments in which another experiment the young birds were allowed to hear taped recordings of adult male white-crowned sparrow songs (but not see the males), young males in Marin may learn to sing the dialect of that region by listening to what adult Marin males are singing (without needing to see them) which was tested by Marler and his colleagues by taking eggs from white-crowned sparrow nests and hand-rearing them in the laboratory in 2 different acoustic environments, Supporting the "Social Environment" Hypothesis showing that both environmental aspects (acoustic & social) are important in the development of learning songs, The "Social Interactions" Hypothesis proposes that differences in song dialects are the result of social interactions between a young bird and its adult male tutor, one experiment the young birds were raised in "acoustic isolation"(so they could not hear adult male white-crowned sparrow songs) resulting in the young birds only producing "twitter calls", but not a full song., The "Acoustic Stimulus" Hypothesis proposes that differences in song are the result of differences in a birds' acoustic environment only, Supportinng the "Acoustic Environment" Hypothesis showing that both environmental aspects (acoustic & social) are important in the development of learning songs, the young birds learning the song of the strawberry finch (not the song of the white-crowned sparrow) thereby Supporting the "Social Environment" Hypothesis, a young bird's "environment" including acoustic environment, differences in song dialects are the result of social interactions between a young bird and its adult male tutor which was missing from Marler's experiment