Chestnut-sided Warblers (Dendroica pensylvanica) and Blue-winged Warblers (Vermivora pinus) sing different song types in different contexts. Local dialects exist in the "Unaccented Ending" songs ...
The songs of 102 male House Finches (Carpodacus mexicanus) were sampled in southern California. Additionally, songs were induced with testosterone in 10 captive females. Females sang only 1 or 2 ...
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