Implications for evolutionary trends from the pairing frequencies among golden-winged and blue-winged warblers and their hybrids

John Confer, Cody Porter, Kyle Aldinger, Ronald Canterbury, Jeffery Larkin & Darin McNeil
Extensive range loss for the Golden-winged Warbler (Vermivora chrysoptera) has occurred in areas of intrusion by the Blue-winged Warbler (V. cyanoptera) potentially related to their close genetic relationship. We compiled data on social pairing from nine studies for 2,679 resident Vermivora to assess evolutionary divergence. Hybridization between pure phenotypes occurred with 1.2% of resident males for sympatric populations. Pairing success rates for Golden-winged Warblers was 83% and for Blue-winged Warblers was 77%. Pairing success for...
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