Swallow-tailed Hummingbird

Eupetomena macroura

Order: Apodiformes / Family: Trochilidae

Swallow-tailed Hummingbird (Eupetomena macroura) - photo used for identification

Wikimedia Commons

About the Swallow-tailed Hummingbird

The Swallow-tailed Hummingbird, Eupetomena macroura, is a captivating species that enchants bird enthusiasts with its vibrant colors and graceful flight. This hummingbird is a member of the family Trochilidae, known for its iridescent plumage and distinctive forked tail, which contributes to its name. It is primarily found in eastern and central South America, with a range that includes Brazil, Bolivia, Paraguay, and Argentina. The Swallow-tailed Hummingbird plays a vital ecological role as a pollinator, visiting a variety of flowering plants that rely on its feeding habits for successful reproduction. These birds thrive in diverse habitats, from open woodlands and gardens to savannas and coastal regions. They often prefer areas with ample flowering plants that provide a reliable source of nectar. While primarily non-migratory, some populations may exhibit local movements in response to the availability of food resources. During the breeding season, which varies across its range, the Swallow-tailed Hummingbird becomes particularly active, showcasing its remarkable agility. Its flight is an elegant display of rapid wing beats and swift maneuvers, allowing it to hover expertly while feeding. The Swallow-tailed Hummingbird's ability to adapt to various environments, including urban areas, demonstrates its resilience and resourcefulness.

The Swallow-tailed Hummingbird belongs to the family Trochilidae, within the order Apodiformes. These birds typically live typically 4-6 years, with some individuals living up to 8 years..

How to Identify a Swallow-tailed Hummingbird

Adult Swallow-tailed Hummingbirds boast a stunning array of colors. Their upperparts are predominantly green, with a brilliant blue crown and throat that shimmer in the sunlight. The bird's most distinctive feature is its elongated forked tail, which appears almost black but is deeply tinged with a dark blue hue. The tail feathers are considerably longer than those of many other hummingbird species, giving it a unique silhouette in flight. Juvenile Swallow-tailed Hummingbirds are similar in appearance to adults but may exhibit slightly duller colors, particularly on the crown and throat. Both sexes appear similar, though males typically display more vibrant hues. When perched, the Swallow-tailed Hummingbird holds its body upright with its tail often fanned out for balance. In flight, its long tail is a key identifier, complemented by its rapid wing beats that create a characteristic humming sound. While confusion with other species is rare, the Fork-tailed Woodnymph, with its less deeply forked tail and different coloration, may occasionally be mistaken for the Swallow-tailed Hummingbird by novice birders.

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Swallow-tailed Hummingbird Habitat and Range

Preferred Habitat

The Swallow-tailed Hummingbird inhabits a range of environments, from the dense forests and open woodlands of eastern Brazil to the savannas and scrublands of central South America. These birds are commonly found in areas with abundant flowering plants, which provide their primary food source. They thrive at various elevations, from sea level to higher altitudes in the foothills of the Andes. Seasonal habitat shifts are minimal, as this species generally remains within its established range year-round. Interestingly, the Swallow-tailed Hummingbird has adapted well to urban settings, often seen in gardens and parks where flowering shrubs are plentiful. Its presence in both rural and urban habitats underscores its adaptability and resilience.

Geographic Range

The Swallow-tailed Hummingbird is primarily a resident of South America, with its range extending across several countries, including Brazil, Bolivia, Paraguay, and northern Argentina. It is most abundant in Brazil, where it occupies a variety of ecosystems, from the coastal Atlantic Forest to the inland cerrado regions. Although generally non-migratory, certain populations may engage in short-distance movements within their range in response to changes in food availability. The population density is highest in areas with a rich diversity of flowering plants, where these hummingbirds can find ample nourishment. While not considered a migratory species, the Swallow-tailed Hummingbird's capacity for local movement helps it cope with seasonal variations in its habitat.

Want to know which birds visit your area? Browse our backyard birds by location guides for region-specific species lists.

What Does the Swallow-tailed Hummingbird Eat?

The diet of the Swallow-tailed Hummingbird primarily consists of nectar, which it sources from a variety of flowering plants. These include species such as hibiscus, red hot pokers, and various native shrubs, which provide the high-energy sustenance required for its rapid metabolism. In addition to nectar, this hummingbird also consumes small insects and spiders, which supply essential proteins. Feeding typically occurs throughout the day, with peak activity during early morning and late afternoon when flowers are most productive. The Swallow-tailed Hummingbird employs a hovering technique to access nectar, using its long, specialized bill to probe deep into flowers. Its ability to forage efficiently allows it to exploit a wide range of floral resources, ensuring a stable food supply year-round.

Want to attract Swallow-tailed Hummingbirds to your yard? See our recommended feeders and seed types for the best results.

Swallow-tailed Hummingbird Behavior and Social Structure

Swallow-tailed Hummingbirds exhibit a solitary and territorial nature. Males defend feeding territories vigorously, often engaging in aerial displays to deter intruders. These displays include rapid dives and vocalizations, showcasing their agility and dominance. Courtship involves elaborate flight patterns, with males performing pendulum-like movements to attract females. Outside the breeding season, these hummingbirds are less aggressive and may tolerate the presence of conspecifics while feeding. They are diurnal, with activity peaking at dawn and dusk. In response to predators, such as birds of prey and snakes, Swallow-tailed Hummingbirds rely on their speed and agility to evade capture. Their daily routine includes periods of rest interspersed with bursts of intense feeding activity.

Swallow-tailed Hummingbird Nesting and Reproduction

The nesting habits of the Swallow-tailed Hummingbird are as fascinating as its feeding behavior. Nests are typically constructed in sheltered locations, often on horizontal branches of trees or shrubs. The nest itself is a small cup-like structure, skillfully woven from plant fibers and spider silk, which provides strength and flexibility. Lichens and mosses often adorn the exterior, providing camouflage. Females lay two tiny white eggs per clutch, which are incubated for approximately 15 to 16 days. During incubation, the female remains solely responsible for nest maintenance and protection. Once hatched, the chicks are altricial, requiring constant care and feeding. Fledging occurs about 20 to 22 days after hatching, with young hummingbirds gradually gaining independence. The Swallow-tailed Hummingbird typically raises two to three broods per year, depending on environmental conditions.

Swallow-tailed Hummingbird Sounds and Vocalizations

The vocalizations of the Swallow-tailed Hummingbird are a key aspect of its behavior. Its primary song consists of a series of high-pitched, rapid notes that can be described as a mix of chirps and trills. These sounds play a crucial role in territory defense and mate attraction. In addition to its song, the hummingbird produces various call notes, including short, sharp chips and soft whistles. Alarm calls are more abrupt and louder, serving as warnings to nearby individuals of potential threats. During the dawn chorus, Swallow-tailed Hummingbirds become particularly vocal, contributing to the vibrant soundscape of their habitat.

Interesting Facts About the Swallow-tailed Hummingbird

  • 1The Swallow-tailed Hummingbird can beat its wings up to 80 times per second, allowing it to hover and maneuver with precision.
  • 2Despite their small size, Swallow-tailed Hummingbirds have a heart rate that can reach over 1,200 beats per minute during flight.
  • 3These hummingbirds possess excellent memory, enabling them to remember the locations of individual flowers and the timing of their nectar production.
  • 4The long forked tail of the Swallow-tailed Hummingbird not only aids in flight stability but also enhances its courtship displays.
  • 5Swallow-tailed Hummingbirds can consume up to twice their body weight in nectar daily to meet their high energy demands.
  • 6The species' ability to thrive in both natural and urban environments demonstrates its adaptability and resilience.
  • 7Swallow-tailed Hummingbirds play a crucial role in pollination, helping maintain the biodiversity of the ecosystems they inhabit.

Swallow-tailed Hummingbird Conservation Status

The Swallow-tailed Hummingbird currently holds a status of Least Concern on the IUCN Red List, with populations considered stable. However, habitat loss due to deforestation and urban expansion presents ongoing threats. Conservation efforts focus on habitat preservation and restoration, particularly in regions experiencing significant ecological change. Historically, the Swallow-tailed Hummingbird has shown resilience to environmental pressures, maintaining stable numbers across its range. Continued monitoring and conservation initiatives are essential to ensure the long-term survival of this remarkable species.

Attracting Swallow-tailed Hummingbirds to Your Feeder

The Swallow-tailed Hummingbird is a regular visitor to backyard bird feeders across its range. At the Eye On The Fly feeding station, we observe Swallow-tailed Hummingbirds regularly and capture footage with our feeder cameras.

Other Trochilidae Species

View all Trochilidae species

Birds Similar to the Swallow-tailed Hummingbird

These species are often confused with the Swallow-tailed Hummingbird due to similar appearance or overlapping range.