#What determines a warbler’s colors?
“#What determines a warbler’s colors?” While blue-winged warblers have predominantly yellow underparts, golden-winged warblers have white bellies and a black throat patch and face mask. Hybrid offspring of blue-winged and golden-winged warblers have a mix of coloration from the two parent species. Credit: David Toews, Penn State A new study has narrowed down the region…