Azure-crowned Hummingbird

Quick Facts

• Scientific Name: Saucerottia cyanocephala
• Spanish Name: Colibrí corona azul
• Family: Trochilidae
• Known Nicknames: Blue-crowned Hummingbird, Red-billed Azure-crown
• Average Length: 10–11.5 cm / 3.9–4.5 in
• Average Weight: 5.2–5.8 g / 0.18–0.20 oz
• Wingspan: 11–13 cm / 4.3–5.1 in
• Key Feature: Brilliant metallic azure-blue crown and hindneck contrasting with a white throat and underparts
• Primary Diet: Nectarivore (Nectar and small insects)
• Range: Southern and eastern Mexico, Guatemala, Belize, El Salvador, Honduras, and Nicaragua
• Habitat: Pine-oak forests, humid evergreen forest edges, plantations, and gardens
• Social Structure: Solitary and highly territorial
• Nesting/Breeding: Cup-shaped nest made of plant down and spiderwebs on a tree branch
• Statut de conservation : Préoccupation mineure (LC)
• Population Trend: Decreasing

The Azure-crowned Hummingbird (*Saucerottia cyanocephala*) is a captivating avian gem native to the pine-oak forests, woodlands, and gardens of Mexico and Central America. True to its name, this medium-sized hummingbird’s most striking feature is its brilliant, iridescent azure-blue crown that flashes spectacularly in the sunlight, contrasting beautifully with its metallic bronze-green upperparts and clean, grayish-white underparts. A key identifying characteristic is its straight, slender bill, which features a distinctive dual coloration of black on top and a fleshy-pink or reddish base below. Renowned for its remarkable aerial agility and high-energy lifestyle, this vital pollinator hovers effortlessly to feed on nectar and tiny insects, defending its feeding territories with a fierce, spirited determination that belies its delicate and glittering appearance.

Faits amusants

Despite its delicate, glittering blue crown, this tiny powerhouse is surprisingly feisty, routinely picking fights with bumblebees and chasing away birds twice its size to protect its favorite nectar spots. To survive chilly nights in its high-altitude habitats, it can plunge its body into torpor, a state of deep sleep that drops its heart rate from over a thousand beats per minute to a mere fraction of that to conserve energy. Furthermore, the female is a master architect who weaves sticky spiderwebs into her cup-shaped nest, allowing the structure to elastically stretch and expand as her chicks grow.

Habitats et répartition

The geographical range of this species extends across Middle America, stretching from northern and western Mexico (including areas from southern Sonora and Tamaulipas southward) through Guatemala, Belize, El Salvador, and Honduras, reaching its southern limit in northern Nicaragua. It is primarily a resident species throughout its range, though some altitudinal movements may occur in response to seasonal food availability.

It primarily inhabits pine-oak and humid evergreen forests, as well as forest edges, clearings, and semi-open woodlands. It adapts well to human-modified landscapes, frequently occurring in coffee plantations, suburban gardens, parks, and scrubby second-growth areas. This species is typically found at elevations ranging from near sea level up to around 2,400 meters, showing a preference for subtropical and temperate montane environments.

Comportements & Reproduction

This highly solitary species exhibits aggressive territorial behavior, vigorously defending nectar sources and feeding territories from both rival hummingbirds and large insects. Outside of brief mating encounters, there is no cohesive social structure or long-term pair-bonding. During the breeding season, males practice polygyny, establishing temporary display territories where they perform aerial dives and vocalizations to attract multiple females. Once copulation is complete, the male departs immediately and plays no role in selecting the nest site, incubating eggs, or rearing the young.

The female bears the sole responsibility for reproduction, constructing a compact, cup-shaped nest on a horizontal tree branch or shrub. She weaves the nest using plant fibers, moss, and lichens, binding the structure together with spider silk, which provides the unique elasticity needed to expand as the chicks grow. She typically lays a clutch of two small white eggs and incubates them alone. After hatching, the female feeds the nestlings a nutrient-rich diet of regurgitated nectar and small arthropods until they are fully fledged and independent.

Alimentation

The Azure-crowned Hummingbird (Saucerottia cyanocephala) sustains its incredibly high metabolism primarily on a diet of sugar-rich nectar, supplemented by small insects and spiders for essential protein. It feeds on a diverse array of flowering plants, showing a particular fondness for epiphytes like bromeliads, as well as shrubs and trees from the Fabaceae and Rubiaceae families. An interesting aspect of its feeding behavior is its adaptability across different forest strata, as it will forage from the low understory all the way up to the high canopy depending on resource availability. To secure these vital energy sources, this hummingbird displays highly territorial behavior, aggressively defending prime floral patches from rivals. Additionally, it employs active hunting techniques, capturing insects mid-air through a method known as "hawking" or plucking them directly from foliage and spider webs to meet its daily nutritional demands.

Couleurs

The Azure-crowned Hummingbird features a brilliant, iridescent azure-blue crown and forehead that contrasts sharply with its clean white throat and breast. Its upperparts, including the back and wings, are a dull olive-green to bronze that provides excellent camouflage among forest foliage, while the tail is a muted brownish-gray. A straight, dark bill with a distinctive pinkish-red base on the lower mandible completes its markings, with the glittering blue head serving as a striking visual signal for mating and territorial displays.

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