northern rough winged swallow flying in the sky

america breast broad brown coverts darktipped deeper flocks found indistinct juveniles lankier larger look martin mixed north northern notch notched peninsula plain plainest recalling ridgways rough rusty short square subspecies swallow swallows tail throat undertail wash water wingbars winged wings yucatan flying sky america breast notched wingbars “ridgway’s” martin dark-tipped coverts swallows