White Ibis (Eudocimus albus)

The White Ibis is, well… entirely white in plumage. When spotted from a distance it can resemble a Great Egret, Cattle Egret or Snowy Egret, however the pink legs and face, along with the long, skinny downcurved bill is diagnostic. The tips of the wings are black, although that is only visible during flight. The juvenile has brown upperparts, and the neck is striped in brown and white, with gray legs and a darker bill. It is found in ponds and marshes in Guanacaste and the northern area of the country; also along the pacific coast of Costa Rica. Given its habitat, they usually wade in the shallow waters and mudflats, where pick small crustaceans and fish, just like Egrets do.

Bare-faced Ibis (Phimosus infuscatus)

Like most ibises, this bird has a long, downwardly curved bill, which gives its silhouette a very particular appearance. In poor light it can look very dark and black, and when perched on the trees they may resemble black vultures, until the bill is distinguished. Their plumage is green overall. Their defining feature is the lack of feathers in the face, which sets it apart from the Green Ibis. They can be very noisy at dawn and dusk, specially if traveling in large groups. They forage mostly in the ground, in grassy fields or swamps where they can catch small invertebrates.

Green Ibis (Mesembrinibis cayennensis)

The Green Ibis is a large bird with a peculiar bill that almost looks like a sickle. The name is misleading, as most of the time this bird is found perched high in the trees early in the morning, so the lighting conditions make it look black. If you pay close attention, there is some green iridescence in the neck, and the body does look greenish, however most of the time it will resemble a Black Vulture. Their noisy call is only heard when they are flying from one tree to another one. They do come to the ground for feeding, but at the first sign of potential danger, they will fly off to safety high in a tree.