macaw: long-tailed brilliantly colored parrot of Central America and South America; among the largest and showiest of parrots
parrot: usually brightly colored zygodactyl tropical birds with short hooked beaks and the ability to mimic sounds
secretory phase: the second half of the menstrual cycle after ovulation; the corpus luteum secretes progesterone which prepares the endometrium for the implantation of an embryo; if fertilization does not occur then menstrual flow begins