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  • Rare triple-hybrid warbler (Golden-winged Warbler, Blue-winged Warbler, and Chestnut-sided Warbler).
    Lowell Burket
    Rare triple-hybrid warbler (Golden-winged Warbler, Blue-winged Warbler, and Chestnut-sided Warbler).
  • Graphic shows predicted family tree of warblers leading to the three-species hybrid. Blue-winged, Golden-winged, and Brewster's Warblers by Liz Clayton Fuller; Chestnut-sided Warbler from del Hoyo et al. (2018) Handbook of the Birds of the World Alive; new hybrid by Jillian Ditner.
    Cornell Lab of Ornithology
    Graphic shows predicted family tree of warblers leading to the three-species hybrid. Blue-winged, Golden-winged, and Brewster's Warblers by Liz Clayton Fuller; Chestnut-sided Warbler from del Hoyo et al. (2018) Handbook of the Birds of the World Alive; new hybrid by Jillian Ditner.
  • Rare triple-hybrid warbler (Golden-winged Warbler, Blue-winged Warbler, and Chestnut-sided Warbler).
    Lowell Burket
    Rare triple-hybrid warbler (Golden-winged Warbler, Blue-winged Warbler, and Chestnut-sided Warbler).
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