Rhinoceros horn bills have an upward curve casque, largest among horn family, found in Indonesia, Thailand, and Singapore, amplifying their calls and causing loudness in the forest.

Great horn bills, native to Southeast Asia, have a yellow, curved bill with a concave casque for sexual selection, making loud duets and rapid barks during breeding.

Keel-billed toucan, native to South America, has a colorful, large bill measuring 20 cm, feeding on fruits, berries, insects, lizards, and small frogs.

Flamingos are pink birds with unique beak shapes, bent bills, and distinctive colors. They feed in flocks, breed, and change color after two years.

Shoe bills are prehistoric African birds with a 9.4-inch bulbous, grayish-marked, sharp-edged, and hook-tipped bill. They feed on fish, frogs, water snakes, snails, and turtles.

Roseate spoonbills, found in Caribbean shores, Central America, and Mexico, have a unique, flattened bill, long legs, and bright pink feathers for easy water walking.

American white pelican, largest aquatic bird, grows 70 inches, 15.2 inches in beak, filters water, and has a unique horn in breeding season.

Black skimmer birds have a unique long beak, thin bill, deep orange and black parts, aiding in food search and easy fish catch, typically feeding in large flocks.

Atlantic puffins, native to Atlantic ocean, have colorful broad beaks, penguin-like colors, and can swim underwater, dive 200 meters, and catch fish with waterproof feathers.

The North American shore bird, long-billed curlew, attracts various species with its 8.6 inch long bills, creating dry nests and leaving chicks soon after hatching.