Restart Bird Identification Expert

What was the SIZE of the Gray Swallow-like bird you saw in Yucatan?



Tree Swallow: Medium-sized swallow with iridescent blue-green upperparts and white underparts. The wings are dark gray and tail is dark and forked. Black bill, legs and feet. Swift, graceful flight, alternates slow, deep wing beats with short or long glides. Turns back sharply on insects it passes.
 
Restart Bird Identification Expert