Meet the world’s animals.

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• Bicolored Antbird Gymnopithys bicolor

  

  This antbird is recorded in Costa Rica's humid lowland forests. Its chestnut back, white underside, and blue-gray skin around the eye stand out; it uses the understory and adjacent secondary growth.

• Song Sparrow Melospiza melodia

  This sparrow has a russet-and-grey back and bold streaks on its white chest. It occurs across much of North America, though plumage varies by region.

• Brown-headed Parrot Poicephalus cryptoxanthus

  The Brown-headed Parrot is mainly green, with yellow underwings. Two subspecies are listed; one is paler and greener than the other.

• Worm-eating Warbler Helmitheros vermivorum

  This small songbird has a long, pointed bill and striped head. It searches for caterpillars and other insects in dense forest understory.

• Tropical Shearwater Puffinus bailloni

  The Tropical Shearwater dives for small fish and squid and breeds in burrows on islands. In Seychelles it has breeding sites on several islands.

• Tawny-collared Nightjar Antrostomus salvini

  A nightjar of the lowlands of northeastern Mexico, inhabiting dry scrub and open areas with scattered bushes.

• West Indian Woodpecker Melanerpes superciliaris

  This woodpecker lives on Caribbean islands and searches for food on tree trunks and branches. A black mark above and behind the eye occurs in most, but not all, subspecies.

• Red-billed Quelea Quelea quelea

  A small weaver that mainly eats grass seeds in African semiarid grasslands and savannas. Breeding males develop conspicuous facial markings.

• Rufous-tailed Hummingbird Amazilia tzacatl

  The Rufous-tailed Hummingbird is known for the male's glittering green throat and coppery tail. It feeds on nectar as well as small insects and spiders.

• Band-backed Wren Campylorhynchus zonatus

  The Band-backed Wren lives in forests and forest edges in Central America. Dark bars on the back and tail, black spots on the chest, and a tawny belly help identify it.

• Pacific swift Apus pacificus

  A long-winged bird that catches insects in flight and visits Japan in summer.

• Stripe-throated Yuhina Yuhina gularis

  The historical account places the nominate subspecies Y. gularis gularis from Nepal to eastern Assam. It describes a brown crest and a throat marked with black streaks.

• Audouin's Gull Ichthyaetus audouinii

  A gull associated with the Mediterranean, Audouin's Gull has a pale gray body and red bill as an adult and feeds mainly on fish.

• Western Bronze-naped Pigeon Columba iriditorques

  The Western Bronze-naped Pigeon inhabits forests in tropical Africa. It feeds on fruit and uses habitats including riparian evergreen forest.

• Blue Cuckooshrike Coracina azurea

  This cuckooshrike occurs in forests from West Africa into parts of Central Africa. Adult males are blue, while females are duller.

• Frill-necked Monarch Arses lorealis

  This monarch flycatcher occurs in rainforest, vine forest, and gallery forest on eastern Cape York. Its white neck frill and blue skin around the eye are striking, and males and females differ in the face and back.

• Surfbird Calidris virgata

  A shorebird that moves to Arctic mountains to breed and spends other seasons on rocky Pacific shores.

• Fulvous Whistling-Duck Dendrocygna bicolor

  A long-legged duck with fulvous and black plumage that feeds in shallow wetlands.

• Sun Lark Galerida modesta

  This lark lives in grassland and dry savanna south of the Sahel and across the Sudan region. It has pale brown plumage with dark streaks.

• Rote Boobook Ninox rotiensis

  An owl endemic to Rote Island, Indonesia. A 2010 field study recorded it in dry woodland and around settlement trees.

• Red-faced Malkoha Phaenicophaeus pyrrhocephalus

  The Red-faced Malkoha is a long-tailed cuckoo with a red face and green bill, native to Sri Lanka. It uses the forest canopy and dense undergrowth.

• Buff-bellied Warbler Phyllolais pulchella

  It occurs in dry savanna, mostly among acacia trees, where pairs and small groups feed actively in the canopy. Its legs and bill are pink.

• Grey Sibia Heterophasia gracilis

  It occurs in hill regions of northeast India, Myanmar, and western Yunnan in China, using evergreen, deciduous, pine, and secondary forests.

• Yellow-legged Thrush Turdus flavipes

  This thrush occurs widely in South America. An island study by the Federal University of Rio de Janeiro reports it in lowlands during the coldest months and conspicuous near mountaintops in spring and summer on Bom Jesus Island.