The breeding season of the resplendent quetzal varies slightly across its range, but tends to fall somewhere between February and July (2) (7). During this time, males attract females by performing courtship dances, aerial displays, calls and loud singing (5) (8). Both the male and female assist in nest building, after which mating occurs within the chamber. One to two eggs are laid, which are then incubated by both parents for 17 to 18 days (5). Once hatched, the male and female take turns to feed the chicks until they fledge after 23 to 31 days (2) (5). It has been reported that less than 20 % of young survive to leave the nest, being preyed upon by toucanets, brown jays, squirrels and weasels (6), and that of those that fledge, another 80 % die before adulthood (2).
During the first 10 days of life, hatchlings are fed almost exclusively on insects, with fruit and small vertebrates such as frogs, lizards and snails being introduced to the diet as they grow (2) (5). Fruit forms the bulk of the adult diet, preferentially wild avocados produced by the laurel family (Lauraceae), but insects, small frogs and lizards will be taken when fruit is scarce (2) (5).