Meet the world’s animals.

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• Red-breasted Merganser Mergus serrator

  

  A diving duck with a long, thin bill and shaggy crest. It catches and eats fish.

• Common Field Mouse Apodemus sylvaticus

  A small mouse found widely across Europe and nearby regions. It uses grassland, farmland, woods, and forests, and eats seeds, fruit, vegetation, and insects.

• Guaiabero Bolbopsittacus lunulatus

  This small parrot is found on Philippine islands. The male is mainly green, with blue on the face and chin and a thin pale-blue band across the upper back. Natural-history information is scarce; on Samar it was observed in fruiting trees near forest edges and cultivated areas.

• Sumatran Mountain Squirrel Sundasciurus (Sundasciurus) altitudinis

  This squirrel is recorded in the Barisan Mountains of Sumatra. It uses forest layers from low bushes to the canopy and feeds on acorn-like nuts called “giseng” by local people.

• Long-billed Cuckoo Chalcites megarhynchus

  The Long-billed Cuckoo lives in lowland forest and has a long bill with a drooping tip. Adult males have a black head, while females show fine reddish-brown barring.

• West Siberian Brown Lemming Lemmus sibiricus

  The West Siberian brown lemming is a compact rodent with a short tail. It feeds on tundra plants and makes burrows in the ground or snow.

• Black-and-white Becard Pachyramphus albogriseus

  An integrative taxonomic study separated P. albogriseus from P. salvini, which had been included in the broader Black-and-white Becard. This entry concerns P. albogriseus, found on the eastern Andean slope and in montane forests of Costa Rica and Panama.

• Hoogstraal's Gerbil Gerbillus (Gerbillus) hoogstraali

  Hoogstraal's Gerbil is a gerbil with fur on its feet. It has been recorded in southern Morocco, where a 2011 survey found it at one site near the Sous River.

• White-speckled Laughingthrush Ianthocincla bieti

  Biet's Laughingthrush is endemic to China, but its distribution and population remain poorly documented. Two active nests found at Laojun Mountain in 2021 and 2024 were in mixed forest with bamboo.

• Fire-footed Rope Squirrel Funisciurus pyrropus

  This squirrel lives in forests of western and central Africa. It has a reddish face and limbs and a bushy tail, and feeds by day on fruits, seeds, and other foods.

• Ultramarine Grosbeak Cyanocompsa brissonii

  The Ultramarine Grosbeak occurs in South America. In Brazil’s southern state of Rio Grande do Sul, a paper reports it in native grassland, areas with trees and shrubs, and along agricultural edges. Females are pale sandy brown above and paler below.

• European hamster Cricetus cricetus

  A wild hamster that carries plants and grains in its cheek pouches and stores them underground.

• White-chested Swift Cypseloides lemosi

  The White-chested Swift is a small swift with a black body and a white triangular breast patch. Its full range remains poorly understood.

• Hairy-footed Gerbil Gerbillurus (Progerbillurus) paeba

  This small gerbil has fur on the soles of its feet. It lives in dry parts of southern Africa and uses burrows beneath grass or shrubs.

• Red-throated Tit Melaniparus fringillinus

  The Red-throated Tit is a small tit of acacia woodland and savanna in Kenya and Tanzania, with records from about 100 to 1,600 m.

• Daurian Ground Squirrel Spermophilus dauricus

  This ground squirrel has gray-russet fur and a pale tail tip. It lives in dry grasslands and plains in northeastern China, eastern Mongolia, and Russia's Transbaikalia region, among other records.

• Rufous Crab Hawk Buteogallus aequinoctialis

  The Rufous Crab-hawk has a rufous belly and yellow feet. It searches for crabs in coastal mangroves and swoops down from a branch to catch them.

• Broad-faced Deermouse Peromyscus megalops

  The broad-faced deermouse has a dark streaked back and a pale underside. It has been studied in humid mountain forests of southern Mexico.

• Silver-beaked Tanager Ramphocelus carbo

  The Silver-beaked Tanager is a South American bird whose lower bill can look silvery. Males are dark red, while females are browner.

• Ryukyu Islands Tree Rat Diplothrix legata

  This large Japanese endemic rodent occurs on Amami-Oshima, Tokunoshima, and Okinawa Island. The University of Tokyo Museum account notes that its tail is longer than its body.

• White-winged Robin Peneothello sigillata

  The White-winged Robin has velvety black plumage and white patches in the wings. In New Guinea's mountains it forages in the lower forest levels for insects and also takes fruit and seeds.

• Himalayan Marmot Marmota (Marmota) himalayana

  The Himalayan marmot is a large ground squirrel with a stout body and short tail. It lives in open high-elevation habitats of the Himalaya and Tibetan Plateau.

• Grey-faced Petrel Pterodroma gouldi

  This large dark petrel breeds on islands and mainland headlands in northern New Zealand. It has long, narrow wings and raises its chick in a burrow.

• Nayarit mouse Peromyscus simulus

  The Nayarit mouse is recorded on the coastal lowlands of Nayarit in western Mexico. Specimens come from tropical forest and moist riverine settings.