Aves

n. class of vertebrates comprised of the birds

Birds (class Aves) are bipedal, warm-blooded, egg-laying vertebrate animals. Birds evolved from theropod dinosaurs during the Jurassic period, c 200 to 150 Ma (million years ago), and the earliest known bird is the Late Jurassic Archaeopteryx, c 155–150 Ma. Around 10,000 living and recently (after 1500) extinct species of birds compose the class Aves, making them the most diverse terrestrial vertebrates. They inhabit ecosystems across the globe, from Arctic terns to Antarctic penguins. Birds range in size from the tiny hummingbirds to the huge Ostrich.
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The World Bank Group (WBG) is a family of five international organizations responsible for providing finance and advice to countries for the purposes of economic development and eliminating poverty. The Bank came into formal existence on 27 December 1945 following international ratification of the Bretton Woods agreements, which emerged from the United Nations Monetary and Financial Conference (1 July – 22 July 1944). Commencing operations on 25 June 1946, it approved its first loan on 9 May 1947 ($250m to France for postwar reconstruction, in real terms the largest loan issued by the Bank to date). Its five agencies are: International Bank for Reconstruction and Development (IBRD)International Development Association (IDA)International Finance Corporation (IFC)Multilateral Investment Guarantee Agency (MIGA)International Centre for Settlement of Investment Disputes (ICSID)
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Noun
1. birds
(synonym) class Aves
(hypernym) class
(member-holonym) Vertebrata, subphylum Vertebrata, Craniata, subphylum Craniata
(member-meronym) bird

n. bird, fowl

n. bird, plumed or feathered animal