Plain-bellied Emerald
Chrysuronia leucogaster
Order: Apodiformes / Family: Trochilidae
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About the Plain-bellied Emerald
The Plain-bellied Emerald, scientifically known as Chrysuronia leucogaster, is a small yet remarkably vibrant hummingbird belonging to the family Trochilidae. This bird is native to the lush tropical regions of South America and is particularly prevalent in countries like Brazil, Venezuela, and Colombia. Its presence is significant in the rich ecosystems of these areas, where it plays a crucial role in pollination. As a key pollinator, the Plain-bellied Emerald aids in the reproduction of various flowering plants, contributing to the biodiversity and ecological balance of its habitat. This hummingbird is often found in diverse environments, ranging from coastal lowlands to forested areas and even urban gardens, making it an adaptable species. The seasonal behaviors of the Plain-bellied Emerald are influenced by the availability of nectar sources. During the breeding season, which typically coincides with the abundance of flowers, these birds exhibit increased territoriality, aggressively defending their feeding territories from other hummingbirds and potential competitors. Outside the breeding season, they may become more nomadic, moving in response to the flowering cycles of their preferred plants. In addition to nectar, the Plain-bellied Emerald supplements its diet with small insects, providing a source of protein necessary for its energy-intensive lifestyle. Its ability to hover in place and maneuver with agility enables it to access flowers of various shapes and sizes. This feeding strategy not only benefits the bird but also ensures the continued pollination of countless plant species. The ecological role of the Plain-bellied Emerald extends beyond its own survival, as it influences the composition and vitality of its habitat. By facilitating the cross-pollination of plants, it supports the growth of vegetation that serves as food and shelter for other wildlife. Thus, the presence of the Plain-bellied Emerald is a vital component of the intricate web of life in the regions it inhabits.
The Plain-bellied Emerald belongs to the family Trochilidae, within the order Apodiformes. These birds typically live typically 3-5 years, with some individuals living up to 8 years..
How to Identify a Plain-bellied Emerald
The Plain-bellied Emerald is best recognized by its shimmering green upperparts and the contrasting white underparts that give the bird its name. Adult males and females share similar plumage, though females may appear slightly duller. The emerald green on the upperparts extends from the crown to the tail, creating a vivid spectacle in sunlight. Juveniles resemble adults but may exhibit slightly less iridescence. A distinguishing feature of the Plain-bellied Emerald is its small size, typically measuring around 8-9 centimeters in length. The bill is straight and slender, adapted for accessing nectar within flowers. While similar in appearance to other emeralds, such as the Glittering-bellied Emerald, the Plain-bellied Emerald lacks the blue throat patch typical of some related species, which can aid in field identification. In flight, its silhouette is characterized by rapid wingbeats and a compact body. Perched, it often displays an upright posture with a slightly cocked tail, a common stance among hummingbirds.
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Plain-bellied Emerald Habitat and Range
Preferred Habitat
The Plain-bellied Emerald thrives in a variety of habitats, including tropical and subtropical forests, open woodlands, and scrublands. It is frequently found at elevations ranging from sea level to 1,500 meters. This adaptability allows it to inhabit both rural and urban environments, including parks and gardens where flowering plants are abundant. While it prefers areas rich in floral diversity, the Plain-bellied Emerald can also survive in more degraded habitats, provided there are sufficient nectar sources. Seasonal habitat shifts occur in response to flowering cycles, with these hummingbirds moving to areas where their preferred plant species are in bloom.
Geographic Range
The Plain-bellied Emerald's range extends across a substantial portion of northern South America. Its breeding range includes much of Brazil, extending into eastern Venezuela and the Guianas. This species is generally non-migratory, although its local movements are dictated by the availability of food resources. Population densities are highest in regions with abundant flowering plants, such as the Brazilian Atlantic Forest and the Orinoco River basin. Although it is a common sight within its core range, the abundance of the Plain-bellied Emerald may vary locally based on habitat quality and floral availability.
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What Does the Plain-bellied Emerald Eat?
The diet of the Plain-bellied Emerald primarily consists of nectar from a variety of flowering plants. It prefers tubular flowers that match the length of its bill, such as those of the genera Inga and Calliandra. This bird also consumes small insects and spiders, which provide essential proteins and nutrients. During the dry season, when flowers are less abundant, the Plain-bellied Emerald may rely more heavily on insects. Its foraging technique involves hovering in front of flowers to extract nectar while simultaneously catching insects in flight. Feeding occurs throughout the day, with peaks in activity during early morning and late afternoon when flowers are most nectar-rich.
Want to attract Plain-bellied Emeralds to your yard? See our recommended feeders and seed types for the best results.
Plain-bellied Emerald Behavior and Social Structure
The Plain-bellied Emerald exhibits a predominantly solitary lifestyle but can be seen in loose aggregations when food sources are plentiful. Territorial behavior is a hallmark of its interactions, especially during the breeding season, when males aggressively defend their chosen feeding areas. Courtship displays involve aerial chases and vocalizations to attract females. The Plain-bellied Emerald is also known for its agility in flight, capable of rapid maneuvers to avoid predators or competitors. Daily activity patterns include periods of intense feeding interspersed with rest and preening. In response to threats, these birds may employ evasive flight or seek cover in dense foliage.
Plain-bellied Emerald Nesting and Reproduction
The nesting habits of the Plain-bellied Emerald involve constructing small, cup-shaped nests made of plant fibers and spider silk. These nests are often attached to slender branches or twigs, providing camouflage and stability. Preferred nesting sites are usually located in dense shrubbery or low trees. The female lays a clutch of two white eggs, which she incubates for approximately 14-16 days. After hatching, the chicks remain in the nest for about 20-22 days until they are ready to fledge. During this time, the female is solely responsible for feeding and caring for the young. Typically, the Plain-bellied Emerald produces two broods per year, depending on environmental conditions and food availability.
Plain-bellied Emerald Sounds and Vocalizations
The primary song of the Plain-bellied Emerald consists of a series of high-pitched, rapid notes, delivered in a rhythmic sequence. These vocalizations serve both territorial and courtship purposes. Call notes are often short and sharp, used in communication between individuals. When alarmed, the bird emits a series of quick, repetitive chirps that alert other hummingbirds to potential danger. At dawn, the Plain-bellied Emerald participates in a chorus, with males prominently singing to assert dominance and attract mates. The sound resembles the tinkling of small bells, both melodious and persistent.
Interesting Facts About the Plain-bellied Emerald
- 1The Plain-bellied Emerald can beat its wings up to 80 times per second, allowing for exceptional hovering ability.
- 2Despite their small size, these hummingbirds can travel over 1,000 kilometers during seasonal movements.
- 3The iridescence in their feathers is not due to pigments but microscopic platelets reflecting light differently.
- 4One Plain-bellied Emerald can visit up to 1,500 flowers in a single day while foraging for nectar.
- 5Their metabolism is so fast that they must consume around half their body weight in food each day.
- 6The bird's heart can beat over 1,200 times per minute during active flight, a necessity for energy-intensive hovering.
- 7The species' name, 'leucogaster,' refers to its distinctive white belly, contrasting with its vibrant green back.
Plain-bellied Emerald Conservation Status
The Plain-bellied Emerald currently holds a status of Least Concern on the IUCN Red List. Its population trend is considered stable, with no immediate threats to its overall numbers. However, habitat loss due to deforestation poses a potential risk, particularly in regions like the Brazilian Atlantic Forest. Conservation efforts focus on preserving these critical habitats and promoting reforestation initiatives. Historically, the Plain-bellied Emerald has maintained a steady population, benefiting from its adaptability to different environments. Continued habitat protection is crucial to ensure the long-term survival of this and other hummingbird species.
Attracting Plain-bellied Emeralds to Your Feeder
The Plain-bellied Emerald is a regular visitor to backyard bird feeders across its range. At the Eye On The Fly feeding station, we observe Plain-bellied Emeralds regularly and capture footage with our feeder cameras.
