Birds are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a lightweight but strong skeleton. Birds live worldwide and range in size from the 5 cm bee hummingbird to the 2.75 m ostrich. They rank as the class of tetrapods with the most living species, at approximately ten thousand, with more than half of these being passerines, sometimes known as perching birds or, less accurately, as songbirds.
Content: Lovebird, canary, starling, Melodious Laughingthrush / Hwamei, The Oriental White Eye / Zosterops Palpebrosus, golden-fronted leafbird / greater green leafbird, garrulax leucolophus, garrulaz palliatus, garrulax mitratus, garrulax bicolor, white-crested laughingthrush, sunda laughingthrush, The Hooded Butcherbird, Copsychus malabaricus, love bird, starlings, jalak, kenari, wambi, pleci, cucak ijo, cucak hijau, poksay, poho, poksai, jagal papua, murai batu, kacer.