Band-tailed Barbthroat

The band-tailed barbthroat, scientifically known as Threnetes ruckeri, is a medium-sized hummingbird adorned with a distinctive black band near the end of its tail. This avian jewel measures between 10 to 11 centimeters in length, with males slightly heavier than females, weighing between 5.5 to 7 grams.

Identification Tips

Adult males of the nominate subspecies boast bronze-green upperparts, a dark ear patch, and a dusky malar stripe. Their tails are dark with white bases and tips, creating the characteristic black band. The throat is a warm ochraceous hue, while the underparts are primarily gray with green feather accents. The bill is nearly straight. Females are similar to males but with a more decurved bill and less contrasting plumage. Juveniles resemble adults but have ochraceous-edged feathers.

Habitat

The band-tailed barbthroat thrives in the understory and edges of primary forests, old second growth, semi-open shrublands, thickets, and plantations, preferring the lush greenery that provides both food and shelter.

Distribution

This species is distributed from southeastern Guatemala and Belize to western Ecuador and western Venezuela. It is found at elevations from sea level up to 1,200 meters.

Behaviour

Presumed to be sedentary, the band-tailed barbthroat may exhibit some post-breeding seasonal movement, particularly among younger birds.

Song & calls

The vocal repertoire of the band-tailed barbthroat includes a high-pitched, fast-paced series of notes, such as 'tzi-tzi-tsee-ee-tsi-tzi-tzi', with variations in complexity between different populations.

Breeding

Breeding seasons vary across its range, with the female constructing a cup-shaped nest on the underside of a drooping leaf. She alone incubates the two white eggs, although males may remain nearby.

Diet and Feeding

As a "trap-line" feeder, this hummingbird visits a circuit of flowers, primarily feeding on nectar from Heliconia and other tubular flowers, as well as small arthropods like spiders. It employs both probing and nectar robbing techniques to sustain itself.

Conservation status

The IUCN has classified the band-tailed barbthroat as Least Concern. While the exact population numbers and trends are unknown, the species is generally considered common and benefits from several protected areas within its range.