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

Sexual selection against hybrid males For pooled values, the pairing success rate for male Golden‐winged Warblers was 83% and for male Brewster's Warblers was 54% (Table 3 ), a highly significant difference ( χ 2 = 44.35, p < .0001).

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