Being entirely gray the Shoebill is easily recognized, even without its most distinguishable feature which gives it its name – a bill that resembles a hook-tipped Dutch clog . The head is large in proportion to the body, and the many-colored bill is wide and thick, The hooked bill is 8 – 12 inches (20 – 25 cm) long, 4 – 5 inches (10 – 13 cm) wide and has cutting edges. It has yellow eyes and extremely long toes. Males and females have similar coloration with small crest or white tufts sticking out from the back of the head. The tail is rounded. The tan beak often has dark spots. The legs are skinny and long, like the legs of most wading birds; feet are unwebbed.
The body of the Blackeye goby (Rhinogobiops nicholsii) is usually a light beige to olive in color with darker spots and mottling. The body coloration and its spots can change if needed. A thick black edge can be seen on the fore-dorsal fin. The raised, big black eyes are responsible for its common name.
Some of the few captive specimens have been mistaken for the much larger Harpy eagle. This remarkable resemblance extends to juvenile plumage — newly fledged birds of both species have white heads. Crested eagles usually eat smaller monkeys than Harpies, and more often hunt reptiles.
Black-necked aracaris have a black head and throat with dark green to almost black back and tail. Its undersides are yellow with a red band and rump.
The head of the male is black except for the bluish-green bare skin around the eyes and the yellow ear-tufts. The upperparts and tail are olive-green. The bill is ivory with black vertical stripes, large spots and a yellowish tip. Females are similar but the head is chestnut and the underparts are a rufous color.
This toucanet is easily identified by its saffron yellow head and breast, olive mantle and red rump. Sexes are similar but the female is duller (somewhat more olive in color) and the bill is shorter. The greenish-horn bill has red patches surrounded by yellowish-gray at the base. The rump and ocular skin are red. The iris is pale yellowish.
The Pied tamarin (Saguinus bicolor) is white on its shoulders and front, with a striking dark brown back, hind part and upper tail. The fur lightens to a rust color on the lower belly, inner thighs and underside of the tail. The bald head has black skin and the large ears add to the distinguished appearance of this species.
Male Guianan cocks-of-the-rock are bright orange birds with large, orange, half-moon crests on their heads. This edge of the crest is lined with a brown band. The crest remains erect and covers the bill. They have black and white wing bars and black on their tails. The bill, legs, and skin are orange as well. Females are a drab brown color. Their bill is black with a yellow tip and they have a smaller crest than the males.
Crimson-rumped toucanets are mostly green in color and, as the name implies, have a red rump. They are somewhat darker and have a bronze tint above. The blue-green tail has some reddish-brown tips. The patch at the base of the mandible, area around the eyes and broad band across the breast are blue. The long, curved beak is reddish-brown and black, with a vertical white stripe at the base. Eye skin is brown and the iris is dark.
As the name implies, Chestnut-eared aracaris have a chestnut coloring around the throat and ears. The head is black and the back and tail dark green to almost black. Their undersides are yellow with a red band and rump. Their dark brown hooked beaks have a yellow-orange stripe along the bottom of the upper mandible. The serrated edge of the upper mandible is prominent. The whitish eyes are surrounded by grayish-blue facial skin. The feet and legs are yellowish-green. Sexes are somewhat similar but the female has more brown on the head, shorter bill and the black area on lower throat is not as wide.