macaw(redirected from Propyrrhura)
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one of the tropical parrots of the family Psittacidae. Macaws are very colorful, have long tails and bare cheek patches. They are big birds (up to 3 feet long) and are members of the Ara genus, e.g. Ara macao, the scarlet macaw.
macaw wasting disease
a progressive weight loss associated with atony of the crop and proventriculus and atrophy of the gizzard, a nonsuppurative encephalitis and visceral ganglioneuritis. Called also proventricular dilatation syndrome and infiltrative splanchnic neuropathy.