The Green-crowned Brilliant (Helidoxa jacula) ranges from Costa Rica to west Ecuador. Its natural place is in wet highland forest, from middle understory well up into canopy, also at gasps edges, and adjacent tall second growth. Adults are 13 cm (5 inches) in height and 9.5 g in weight.
Its forehead, crown, lores, throat, and breast are glittering green. Rest of upperparts and belly are bright bronzy-green. Tail blue-black, and foreneck with metallic violet spot. Bill black and feet dusky. Visits flowers of Heliconia along streams, riverbanks, or in second growth.