Long-billed Starthroat

Characterized as a relatively large hummingbird within its family, this taxon measures between 11 and 12.5 centimeters in total length and weighs approximately 6 to 7 grams. Its most prominent anatomical feature is an exceptionally long, straight, black bill that ranges from 3.5 to 4 centimeters in length. Pronounced sexual dimorphism is evident in the plumage; the male displays a glittering blue to teal-blue crown, a bronze-green back, and a spectacular iridescent magenta-red throat that glows brilliantly under direct sunlight. Conversely, the female features a dark, dusky throat bordered by white scales, lacking the brilliant magenta coloration of her male counterpart. Both sexes share a highly diagnostic white vertical stripe running down the center of the lower back to the rump, along with a prominent white malar stripe on the face and fluffy white patches on the flanks that are easily visible during flight.

Geographical distribution: Occupies a vast neotropical range, stretching from southern Mexico (including the states of Guerrero, Oaxaca, and Chiapas) down through Central America through countries such as Guatemala, Honduras, Nicaragua, Costa Rica, and Panama. In South America, its distribution encompasses Colombia, Venezuela, and the Guianas, extending southward through the Pacific and Amazonian slopes of Ecuador, Peru, and northern Bolivia, reaching deeply into the central and northeastern regions of Brazil, establishing a broad continental presence.

Habitat: Primarily inhabits the canopy and edges of humid lowland forests, gallery forests, semi-open woodlands, tall second-growth areas, and transitional zones. It is also frequently encountered in shaded agricultural plantations, such as coffee and cacao crops, as well as wooded savannas and suburban gardens rich in native flowering trees. While it prefers the mid-to-high strata of the vegetation, it avoids the dark, dense interior of primary rainforests, showing a clear preference for ecotones where sunlight penetration stimulates the blooming of vascular plants.

Feeding: Its diet is predominantly nectarivorous, supplemented by a significant intake of animal proteins. It feeds on the nectar of flowers from tall canopy trees, showing a strong preference for genera such as Erythrina, Tabebuia, Calliandra, and Inga, as well as various species of epiphytic bromeliads. To fulfill its protein requirements, it is a highly active aerial hunter, executing complex acrobatic hawking maneuvers in forest clearings to capture small flying insects like dipterans, hymenopterans, and tiny beetles directly from the air.

Behavior: Exhibits a solitary and highly active temperament, spending long periods perched on exposed dead branches in the uppermost canopy, from which it surveys its territory. Unlike highly territorial hummingbirds, it employs a flexible foraging strategy that combines territorial defense of rich floral patches with trap-lining behavior, traveling long distances to visit scattered floral resources. During the breeding season, males perform dramatic aerial courtship displays consisting of U-shaped pendulum flights accompanied by high-pitched, metallic vocalizations to attract females.

Nesting: The reproductive cycle involves the construction of a tiny, compact, cup-shaped nest meticulously built solely by the female. She utilizes soft plant fibers, seed down, and moss, binding the entire structure together with abundant spider silk to provide elasticity and weather resistance. The exterior of the nest is camouflaged with bits of lichens, and it is usually saddled onto thin, horizontal branches at heights ranging from 4 to 12 meters above the ground. The female typically lays two pure white eggs, which she incubates exclusively for a period of 15 to 19 days. After hatching, the mother assumes sole responsibility for brooding and feeding the nestlings, regurgitating a mixture of nectar and semi-digested insects until the young fledge at approximately three weeks of age.

Conservation status: Classified as a species of Least Concern (LC) on the IUCN Red List of Threatened Species. This classification is supported by its extremely large geographical range and population stability, which, although suspected to be in gradual decline due to localized habitat loss from deforestation and agricultural expansion, does not currently meet the quantitative thresholds to be considered threatened.