The Band-tailed Pigeon has an overall dull coloration, with gray upperparts and purplish underparts and head. A white band on the nape, iridescent green patch on the back of the neck, red eye ring and yellow bill distinguish it from any other pigeon or dove in Costa Rica. They inhabit the highlands, sharing habitat mostly with the Ruddy Pigeon, but the latter has an entirely different body color, hence they should not be easily confused.
The Killdeer is a small bird similar to the Plover family. They are migrants that spend winter in Central and Southamerica, from late August to May. It is the only plover that shows two black bands on the chest, along with the orange edge of the eye. During the flight, they show mostly white on the underparts, brown on the upperside with tawny rump. They are noisy when flying, particularly if spooked, delivering a very high-pitched sound for which it receives its English common name.