Meet the world’s animals.

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• Waller's Starling Onychognathus walleri

  

  Males are blue-black with reddish-brown flight feathers and red eyes, while females have gray heads and breasts. They forage for fruit and animal food in the canopy of montane forest.

• White-billed Buffalo Weaver Bubalornis albirostris

  This large weaver lives in dry habitats south of the Sahara and feeds on seeds, fruit, and small invertebrates found on the ground.

• Willet Tringa semipalmata

  The Willet is a large shorebird with long legs and a straight bill. In flight, it shows a bold black-and-white wing stripe.

• Chopi Blackbird Gnorimopsar chopi

  This all-black icterid has records in protected areas across Argentina. It is seen alone or in pairs and sometimes gathers in groups.

• Black Heron Egretta ardesiaca

  The Black Heron is a dark heron found in sub-Saharan Africa and Madagascar. In shallow water it may spread its wings like an umbrella while foraging for fish.

• Campo Pipit Anthus chacoensis

  This pipit is recorded mainly in Argentina's central Pampas. It has been observed in alfalfa and soybean fields and in natural grassland. Related pipits can be difficult to separate in the field; overall color, the outer tail feathers, and the hind claw are among the identification characters discussed in the paper.

• Rufous-bellied Swallow Cecropis badia

  A swallow with rich rufous, unstreaked underparts that uses open habitats such as grassland and feeds on invertebrates.

• Dusky Sunbird Cinnyris fuscus

  A breeding male has a glossy black head, back, and chest with a white belly. The orange pectoral tufts may show when he is excited or displaying. The species feeds mainly on nectar.

• Moss-backed Sparrow Arremon dorbignii

  The Moss-backed Sparrow ranges from the eastern Bolivian Andes foothills to northwestern Argentina. It uses the understory of second-growth and mature forest, usually alone or with its mate and sometimes in mixed flocks.

• Scaly-throated Foliage-gleaner Anabacerthia variegaticeps

  A foliage-gleaner ranging from Central America to the western Andes, where it searches branches and leaves for small invertebrates.

• Angola Lark Amirafra angolensis

  This lark occurs mainly in Angola. Its rufous crown and pale tail are useful identification marks, while the pattern on its back changes seasonally.

• 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.

• White-spectacled Warbler Seicercus affinis

  The White-spectacled Warbler is a scarce winter visitor in Hong Kong. A white eye-ring broken at the front and a yellow wing bar help identify it; it searches for insects in the understory.

• New Zealand Plover Charadrius obscurus

  The northern form of this plover lives on New Zealand’s North Island. Its underside changes color with the season, and males tend to be more richly colored than females.

• Mistle Thrush Turdus viscivorus

  It has a brown back, a grayish head, and spots on the breast and belly. Males may sing after wet and windy weather.

• Grey-throated Warbler Myiothlypis cinereicollis

  This warbler is recorded in the northeastern Colombian and western Venezuelan Andes. It has olive upperparts, a yellow belly, and a grey throat and chest.

• Marsh Antwren Formicivora acutirostris

  This antwren lives in flooded coastal wetlands of southern Brazil. Males have a gray-black underside, while females have black-and-white mottling underneath; the bird uses marsh vegetation.

• Red-billed Teal Anas erythrorhyncha

  A duck distributed in eastern and southern Africa. It uses shallow freshwater wetlands with vegetation; the male’s bill becomes redder during breeding, according to the regional account.

• Double-eyed Fig Parrot Cyclopsitta diophthalma

  In the nominate subspecies, the adult male has a red forehead and cheeks, blue above and in front of the eye, and an orange-yellow band on the hindcrown. Ficus seeds are its main wild food.

• Chestnut-bellied Cuckoo Coccyzus pluvialis

  The Chestnut-bellied Cuckoo is a large Jamaican cuckoo with a chestnut belly and long, white-spotted tail. It runs along branches while searching for food.

• Yellow-billed Babbler Argya affinis

  The Yellow-billed Babbler is a social bird of drier habitats in southern India and Sri Lanka. It has a pale crown, yellow bill, and blue eyes.

• Dark-rumped Swift Apus acuticauda

  The Dark-rumped Swift has breeding records in the eastern Himalayas and northeastern India. It nests in cliff crevices near forest.

• Azure Tit Cyanistes cyanus

  It has a white head, a dark line through the eye, and blue, grey and white plumage. A European account describes it as favoring bushes near fresh water.

• White-eyed Buzzard Butastur teesa

  The White-eyed Buzzard is a raptor with conspicuously pale eyes and throat. It is recorded in the Kaiga survey area in India and eats insects as well as small vertebrates.