Coppery Emerald
Chlorostilbon russatus
Order: Apodiformes / Family: Trochilidae
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About the Coppery Emerald
The Coppery Emerald, scientifically known as Chlorostilbon russatus, is a striking member of the hummingbird family, Trochilidae. This resplendent bird is known for its vibrant coppery-green plumage that shimmers in the sunlight, making it a jewel of the avian world. Found primarily in the humid tropical forests of South America, the Coppery Emerald is a small bird with a big presence. It inhabits regions of Colombia, Venezuela, and parts of Brazil, typically preferring the dense undergrowth of lowland rainforests. The emerald's presence in these ecosystems is significant, as it plays a vital role in pollination, facilitating the reproduction of numerous plant species. Throughout its range, this hummingbird acts as a key pollinator, sipping nectar from a variety of flowering plants and inadvertently transferring pollen from one bloom to another. This ecological interaction not only aids the survival of the plants but also supports the broader ecosystem, proving the Coppery Emerald's importance beyond its aesthetic appeal. Seasonal behaviors of the Coppery Emerald include altitudinal migration, where individuals may move to different elevations in search of abundant food sources. During the wet season, when flowers are in full bloom, these birds are particularly active, engaging in their crucial pollination duties. Conversely, in drier periods, they may shift to areas with more reliable floral resources. Despite their relatively small size, Coppery Emeralds are territorial creatures, often seen defending their favorite feeding spots against intruders. Their aggressive territoriality highlights the bird's adaptability and resilience, allowing it to thrive in the competitive environments of tropical forests. Understanding the Coppery Emerald's role within its habitat underscores the interconnectedness of forest ecosystems and the critical role of even the smallest avian species.
The Coppery Emerald belongs to the family Trochilidae, within the order Apodiformes. These birds typically live 4-6 years with a maximum recorded of 8 years.
How to Identify a Coppery Emerald
Identifying the Coppery Emerald, Chlorostilbon russatus, requires a keen eye for its distinctive features. Adult males boast a stunning coppery-green plumage that covers their entire body, creating a metallic sheen that is hard to miss. This brilliant coloration is the bird's trademark, making it easily distinguishable from other hummingbirds. In contrast, females of the species exhibit a more subdued coloration, with a blend of green and gray hues on their backs and paler underparts. Juvenile Coppery Emeralds resemble females but with an even duller overall appearance, lacking the males' characteristic vibrancy. When comparing the Coppery Emerald to similar species, such as the Green-crowned Brilliant, it's crucial to note the subtle differences. The Green-crowned Brilliant is larger and lacks the intense coppery tone that defines the Coppery Emerald. In flight, the Coppery Emerald displays a rapid, darting motion typical of hummingbirds, with their long, slender bills poised for nectar feeding. Perched, they maintain an upright posture, often seen atop small branches or twigs, scanning for potential rivals or food sources. The combination of its unique color palette and behavior makes the Coppery Emerald a remarkable example of hummingbird diversity.
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Coppery Emerald Habitat and Range
Preferred Habitat
The Coppery Emerald thrives in the lush, dense undergrowth of tropical lowland rainforests. Its primary habitats include regions in Colombia and northern Venezuela, where the climate is warm and humid, offering a plethora of flowering plants. These birds prefer elevations ranging from sea level up to 1,500 meters, occasionally venturing higher during seasonal migrations. The Coppery Emerald adapts to both primary and secondary forests, demonstrating a degree of flexibility in its habitat requirements. In urban areas close to forest edges, they may visit gardens that provide suitable flowering plants, although they are predominantly forest dwellers. Seasonal habitat shifts occur as the birds follow the blooming patterns of their preferred flora, moving to higher elevations during certain times of the year to access abundant food sources. Despite its adaptability, the Coppery Emerald remains more common in less disturbed forest environments, where human impact is minimal.
Geographic Range
The Coppery Emerald's range is primarily confined to the northern regions of South America. Its breeding range includes Colombia and Venezuela, where it occupies both the Caribbean coastal regions and the Andean foothills. These areas provide the ideal conditions for breeding and foraging, with abundant floral resources supporting their dietary needs. During the non-breeding season, the Coppery Emerald may extend its range slightly, venturing into adjacent areas of Brazil where conditions remain favorable. Although not considered a long-distance migrant, this bird exhibits altitudinal migration, moving between different elevations within its range based on seasonal variations in food availability. Population density hotspots are typically found in regions with dense, uninterrupted forest cover, where the birds can maintain their territorial feeding habits. Due to their limited range, conservation of their habitat is crucial to ensuring the continued survival of the species.
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What Does the Coppery Emerald Eat?
The Coppery Emerald primarily feeds on nectar, relying on a wide variety of flowering plants to sustain its high-energy lifestyle. It favors plants with tubular flowers, such as those from the Heliconia and Bromeliaceae families, which provide ample nectar supplies. In addition to nectar, the Coppery Emerald also consumes small insects and spiders, which provide essential proteins and nutrients not found in floral nectar. This dietary supplementation is crucial during the breeding season when energy demands are heightened. Foraging techniques of the Coppery Emerald involve hovering in front of flowers, using its long bill to extract nectar while simultaneously aiding in pollination. The bird is most active during early morning and late afternoon, times when flowers are most likely to be producing fresh nectar. Seasonal diet changes occur as the availability of specific flowering plants fluctuates, prompting the Coppery Emerald to adjust its foraging strategy accordingly.
Want to attract Coppery Emeralds to your yard? See our recommended feeders and seed types for the best results.
Coppery Emerald Behavior and Social Structure
The Coppery Emerald exhibits a range of fascinating behaviors characteristic of hummingbirds. Highly territorial, these birds are known to fiercely defend their feeding territories against other hummingbirds and even larger bird species. Males, in particular, engage in aggressive displays and aerial chases to deter intruders. During the breeding season, courtship displays become prominent, with males performing elaborate aerial maneuvers and vocalizations to attract females. The Coppery Emerald is generally solitary outside the breeding season, although it may join small feeding flocks when resources are abundant. Its response to predators is swift, relying on agile flight and rapid maneuvers to evade potential threats. Typical daily activity patterns involve early morning feeding, followed by periods of rest during the hotter midday hours, and a return to foraging in the cooler late afternoon. This routine ensures optimal energy conservation and efficient feeding.
Coppery Emerald Nesting and Reproduction
Nesting for the Coppery Emerald involves the construction of small, cup-shaped nests crafted from plant fibers, spider silk, and moss. These nests are strategically placed on thin branches or in the fork of a tree, often well-concealed by surrounding foliage. The female is solely responsible for nest building, incubation, and caring for the young. She typically lays two white eggs per clutch, though occasionally only one. The incubation period lasts approximately 14 to 16 days, after which the altricial chicks hatch. Fledging occurs about 20 to 24 days post-hatching, with the young remaining under the mother's care for several weeks until they become independent. The Coppery Emerald may produce two broods per year, particularly in regions with extended seasons of floral abundance.
Coppery Emerald Sounds and Vocalizations
The Coppery Emerald's primary song consists of a series of high-pitched, rapid trills and whistles, often used by males during courtship displays. These vocalizations are sharp and metallic, resembling the sound of a distant bell. Call notes include short, sharp chips used for communication between individuals, particularly in territorial disputes. Alarm calls are more abrupt and louder, serving as a warning to others about approaching predators. During the dawn chorus, the Coppery Emerald's song blends with the calls of other bird species, contributing to the vibrant soundscape of the tropical forest.
Interesting Facts About the Coppery Emerald
- 1The Coppery Emerald can beat its wings up to 80 times per second, allowing it to hover in place with precision.
- 2Despite their small size, Coppery Emeralds are known for their aggressive nature when defending feeding territories.
- 3These hummingbirds have a rapid metabolism, requiring them to consume up to twice their body weight in nectar daily.
- 4The iridescent plumage of the Coppery Emerald is due to microscopic platelets in their feathers that refract light.
- 5Coppery Emeralds can enter a state of torpor, significantly lowering their metabolic rate to conserve energy overnight.
- 6Their tongues are uniquely adapted with a split, tube-like structure that allows efficient nectar extraction from flowers.
- 7The Coppery Emerald's courtship display includes a series of high-speed dives and vocalizations to attract females.
Coppery Emerald Conservation Status
The Coppery Emerald is currently listed as Least Concern by the IUCN, with stable population trends. However, habitat destruction due to deforestation poses a potential threat to its long-term survival. Conservation efforts focus on preserving tropical forest habitats, ensuring these birds have access to the floral resources they depend on. Historically, the Coppery Emerald has maintained relatively stable populations, but ongoing monitoring is essential to detect any future declines. Protecting its habitat will also benefit numerous other species that share its ecosystem.
Attracting Coppery Emeralds to Your Feeder
The Coppery Emerald is a regular visitor to backyard bird feeders across its range. At the Eye On The Fly feeding station, we observe Coppery Emeralds regularly and capture footage with our feeder cameras.
