As they age, the males slowly molt the green and brown feathers and begin to grow the striking white and copper coat. Juvenile males are often confused with females they have the same coloring as females until they reach sexual maturity at age 7. As of January 2019, only six nests had been found in Monteverde, according to the council for the Bellbird Biological Corridor. The females blend into the surroundings of the forest, which helps them hide its nests from predators. The female bellbirds are smaller and less striking in appearance, being overall olive with yellowish streaking below, pure yellow vent and no wattles. The side wattles do not stick out to the sides and the central one is not extended directly skywards as shown on some old illustrations and specimens. The male shakes the wattles, but otherwise they hang straight down they are neither erectile nor under muscular control. The wattles remain flaccid even when extended. These wattles can be as long as 10 cm (3.9 in) when extended during songs and interactions. Its name comes from the three worm-like wattles of skin that hang from the base of the bill. The body, tail, and wings of the male are uniformly chestnut-brown its head, neck, and upper breast are white and it has a black eye-ring, eye-stripe, and bill. One of four species of bellbird that live in Central and South America, the three-wattled bellbird is between 25 cm (9.8 in) and 30 cm (12 in) long. The International Union for Conservation of Nature has assessed their conservation status as " vulnerable". The male bird has a loud, distinctive, bell-like call, and as these birds are secretive and shy, they are more often heard than seen. The three-wattled bellbird breeds in mountainous regions of Costa Rica and migrates to western Honduras, Nicaragua and Panama. The female has olive plumage with yellowish streaked underparts and a yellow vent area. From the base of his beak dangle three long, slender, black wattles that he uses in display. The male has a white head and throat and the remaining plumage is chestnut brown. The sexes are very dissimilar in appearance. The three-wattled bellbird ( Procnias tricarunculatus) is a Central American migratory bird of the cotinga family.
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