The glossy ibis (Plegadis falcinellus) and the white-faced ibis (Plegadis chihi) are two species of wading birds in the ibis family, Threskiornithidae. Both species are found in the Americas, with the glossy ibis having a wider distribution, ranging from the southern United States to Argentina, while the white-faced ibis is found mainly in the central and western United States and Mexico.
The glossy ibis is slightly larger than the white-faced ibis, with a length of 5666 cm (2226 in) and a wingspan of 8297 cm (3238 in), compared to the white-faced ibis’ length of 5161 cm (2024 in) and a wingspan of 7689 cm (3035 in). Both species have long, slender, down-curved bills, which they use to probe in mud and water for food. They also have long legs, which they use to wade in shallow water.