| genetic variability in three amazon parrot species. | parrots of the genus amazona are among the most threatened species of the order pscittaciformes. this work describes allozyme polymorphisms in three amazon parrot species--the blue-fronted amazon (amazona aestiva), the orange-winged amazon (amazona amazonica), and the festive amazon (amazona festiva) -, and provides useful data for the evaluation of their genetic variability. we electrophoretically analyzed blood samples from 68 wild-caught individuals, maintained in captivity in three brazilian ... | 2007 | 18278355 |