The Emerald toucanet (Aulacorhynchus prasinus) is the smallest and shortest-billed toucan in Costa Rica, the only one with green body. You can find it from Tropical Mexico to N Venezuela and E Peru.
29cm (11 ½ “), 180g. Crown and hindneck olive-green, shading to grass green over rest of upperparts; rectrices bluish distally, tipped with chestnut; lores, below eye and throat dark blue; rest of underparts pale yellow-green; crissum chestnut. Orbital skin bluish-slate; sides of upper mandible bright yellow; base of culmen, broad stripe along tomium and lower mandible black; dark red patch around nostrils; narrow yellow (upper mandible) and white (lower one) line encircling base of bill; legs bright olive-green. Young: throat paler; underparts paler and duller; dark areas of bill dusky-horn; no pale line encircling base.