Dashing small falcon of tropical lowlands and foothills. Prefers forest edge, adjacent semi-open areas with tall trees, buildings. Found at several Maya ruins in Mexico and northern Central America, also locally in towns. Looks dark overall with a contrasting white throat, and in flight can be confused with White-collared Swift. With a good view, note the rusty belly and ‘trousers.’ Hunts bats at dusk, but main food is small birds caught in flight.