Fiery Topaz

Topaza pyra can reach a body length of about 19 cm (7.5 in). There is strong sexual dimorphism between the males and females. Both have a dark brown iris, but males are larger on average than females. Males of these brilliantly marked hummingbirds have a back, lower breast, upperwing-coverts, and outer webs of the innermost two remiges that are shining orange-red, becoming more orange on the belly, shading over the rump into the yellow-green/green uppertail-coverts. The top and sides of the head are velvet black, with an iridescent green and orange red throat and a thick, decurved and a rather short bill (about 25 mm (0.98 in). They have two characteristic elongated central tails (about 64 mm (2.5 in). The male's bill is black, and it has gray feet.

Females are shining green above, with a coppery red gorget bordered by a narrow orange-yellow-green band. The rest of the head is medium to bluish-green, with the breast less bluish. Tail is purplish red. Female bills are black like the male's, but their feet are orange/flesh colored. The upper and under-tail coverts have orange highlights in the males, as opposed to blue-green in the females, and are somewhat lengthened and loose-webbed. This species is very similar to crimson topaz. Topaza pyra can be distinguished from the closely related Topaza pella by their shorter beaks, longer wings, longer tail, and thinner rectrices.

Topaz hummingbirds as a group are endemic to the Amazonian rainforest. This species has a very large range. T. pyra can be found in Brazil, Colombia, Ecuador, Peru and Venezuela. Its natural habitat is subtropical or tropical moist lowland forest, at an elevation up to 500 metres (1,600 ft) above sea level. They are encountered high in the canopy and prefer the edges of forests and clearings near water, and are often seen close to river banks.

Little is known about the behavior of these birds, as there have been few observations made of them in the wild, but they have been observed feeding and interacting with one another over a rocky streams in the foothills of their territory. They are also known to nest in small lichen-covered cups low over the water, like other hummingbirds. The males are rather territorial, and usually ward off intruders around flowering areas.

As with their behavior, more observational studies of these birds is needed. However, it is known that this species is mainly nectarivorous, and feeds at flowers, vines, and epiphytes from eye level to high in the canopy, preferring high flowering vines. They also feed on insects.