The Common Potoo (Nyctibius griseus) has an upright stance. You can find it from Tropical Mexico to W Ecuador and N Argentina; Jamaica, Hispaniola.
38cm (15”), 230g. Above dull grayish-brown, streaked finely with black on crown; mottled and vermiculated with dusky and buff; throat buffy-white with sparse dusky streaks; chest gar-brown mottled with buff; belly paler and grayer; a band of large black spots across lower breast. Erect small feathers above eye look like “horns”. Iris yellow (brilliant orange eyeshine at night); bill dusky; feet brownish. Young: Smaller and paler than adult. Nestling down dense, short, white.