Great Sapphirewing

The Great Sapphirewing is one of the largest hummingbirds, measuring about 15 cm in length with a wingspan stretching up to 24 cm. Adults exhibit a dazzling blue-green iridescence on their upperparts, which contrasts with their more subdued gray underparts. The males and females are similar in coloration, though males often display a slightly more intense blue on their wings. Juvenile Great Sapphirewings resemble adults but with duller plumage and hints of brown on their wings. In flight, they exhibit a strong, steady wingbeat that distinguishes them from smaller hummingbirds. Their flight silhouette is characterized by broad wings and a long, slightly forked tail. When perched, they maintain an upright posture, often seen resting on branches in open areas where they can survey their surroundings. They can be confused with the Giant Hummingbird due to their size, but the Great Sapphirewing's unique blue-green coloration sets them apart.

The diet of the Great Sapphirewing predominantly consists of nectar, which they extract from a variety of high-altitude flowering plants, including those in the genera Puya and Bomarea. They also consume small insects and spiders, supplementing their diet with essential proteins. This diet varies seasonally; during the breeding season, they may increase their intake of insects to meet the higher nutritional demands. Their foraging technique involves hovering in front of flowers and using their specialized bills to access nectar. They tend to feed during the cooler hours of the morning and late afternoon, aligning their activity with the availability of open flowers and lower competition from other nectar feeders.

The Great Sapphirewing exhibits solitary and territorial behavior, often defending their feeding territories from other hummingbirds. During the breeding season, males perform courtship displays that include aerial acrobatics and vocalizations to attract females. These displays often occur near rich feeding sites, where males can showcase both their strength and resource availability. The species is generally non-flocking, although loose aggregations may form in areas of abundant food. They exhibit high levels of activity during daylight hours, primarily feeding and maintaining territories. In response to predators, they rely on their agility and speed to escape, often retreating to dense vegetation for cover.

Great Sapphirewings construct small cup-shaped nests from plant fibers, moss, and spider silk. These nests are often situated on horizontal branches or in sheltered locations within dense vegetation, providing protection from the elements and predators. Females typically lay two eggs per clutch, with an incubation period lasting about 16-19 days. The female alone incubates the eggs and tends to the young, feeding them regurgitated nectar and insects. Fledging occurs approximately three weeks after hatching, with young birds remaining dependent on their mother for some time after leaving the nest. They usually have one brood per year, though favorable conditions may allow for a second.

The primary song of the Great Sapphirewing is a series of high-pitched, rapid notes, often described as a metallic 'tinkling' sound. This song is most frequently heard during the breeding season when males are actively seeking mates. Their call notes include sharp 'tsip' sounds used for communication between individuals and to signal alarm. These birds do not participate in a dawn chorus like many songbirds, but their vocalizations can be heard throughout the day, especially in the early morning and late afternoon when they are most active. Their sounds, though not musical, are a distinctive feature of their presence in the Andean highlands.

• 1The Great Sapphirewing is one of the largest hummingbirds, with a wingspan reaching up to 24 cm.
• 2Unlike many hummingbirds, the Great Sapphirewing prefers the cool climates of high-altitude cloud forests.
• 3These birds can hover in place for extended periods, thanks to their strong wing muscles and broad wings.
• 4Their nests, made of plant fibers and spider silk, are a testament to their intricate building skills.
• 5The iridescent plumage of the Great Sapphirewing reflects light in stunning shades of blue and green.
• 6Despite their size, Great Sapphirewings are agile flyers, capable of swift maneuvers to evade predators.
• 7They play a vital role in pollinating high-altitude flowering plants, contributing to the health of Andean ecosystems.

The Great Sapphirewing is currently classified as Least Concern by the IUCN, though its populations face pressures from habitat loss due to agriculture and deforestation. While overall numbers appear stable, local declines have been observed in areas where their habitats have been drastically altered. Conservation efforts focus on preserving high-altitude ecosystems and promoting sustainable land-use practices. Historical population changes are not well-documented, but the increasing encroachment of human activity into Andean regions poses a potential threat to their long-term viability. Protecting cloud forests and paramo areas is crucial to ensuring their continued survival.