Any of about 18 species of large tropical New World parrots (subfamily Psittacinae) with very long tails and big sickle-shaped beaks. Macaws eat fruits and nuts. They are easily tamed and often kept as pets; some learn to mimic human speech, but most only screech. A few have lived 65 years. Best known is the scarlet macaw (Ara macao), found from Mexico to Brazil, a 36-in. (90-cm) bright-red bird with blue and yellow wings, blue and red tail, and white face.