prominence of white wing edgings, and richness of buff wash on the flanks. Although the mountain chickadee is the black-capped’s closest relative, the Carolina chickadee likely will cause the ...

The Carolina chickadee’s geographic range overlaps the black-capped. Listen and look for differences. Its chick-a-dee-dee call is higher and faster than the black-capped. Also, its white cheek ...

Evolution. 74: 1498-1513. Taylor SA, Curry RL, White TA, Ferretti V, Lovette IJ. 2014. Spatiotemporally consistent genomic signatures of reproductive isolation in a moving hybrid zone. Evolution 68: ...

The boreal chickadee also has a dark brown cap and rich brown sides and flanks, but it has predominantly grayish cheeks, lacks a rufous tint on the back and rump, and shows no white wing edgings.