Purple-throated Woodstar

Quick Facts

• Scientific Name: Philodice mitchellii
• Spanish Name: Estrellita gorjipurpúrea
• Family: Trochilidae
• Known Nicknames: Mitchell's Woodstar
• Average Length: 8–8.5 cm / 3.1–3.3 in
• Average Weight: 3.0–3.3 g / 0.11 oz
• Wingspan: 10–12 cm / 4–4.7 in
• Key Feature: Iridescent violet-purple throat gorget and a prominent white band across the upper breast
• Primary Diet: Nectarivore (Nectar and small insects)
• Range: Eastern Panama through the Chocó region of Western Colombia to Western Ecuador
• Habitat: Humid montane forest edges, clearings, and secondary growth
• Social Structure: Solitary and territorial
• Nesting/Breeding: Small cup-shaped nests constructed from plant down and spider silk on high branches
• Conservation Status: Least Concern (LC)
• Population Trend: Stable

The Purple-throated Woodstar (*Philodice mitchellii*) is a diminutive and enchanting hummingbird native to the humid cloud forests of the Chocó region in Colombia, Ecuador, and Panama. This "micro-bird" is best known for the male’s brilliant, iridescent amethyst-purple throat and a striking white chest band that contrasts beautifully against its dark green plumage. A key identifying feature for both sexes is the pair of conspicuous white patches on the sides of the rump, which remain visible even as they navigate the canopy with a unique, bee-like flight style. Unlike many other hummingbirds, the Woodstar moves with relatively slow, rhythmic wingbeats and a cocked tail, often being mistaken for a large bumblebee as it hovers near nectar-rich flowers. While the male sports a deeply forked, slender tail, the female is characterized by her warm cinnamon underparts, making this tiny aviator a true gem of the tropical Andean foothills.

Fun Facts

This diminutive hummingbird is frequently mistaken for a large bumblebee due to its exceptionally rapid wingbeats and a unique flight style where it holds its body horizontally while emitting a low-pitched drone. During courtship, males perform a dramatic "shuttle display," swinging back and forth like a high-speed pendulum while flaring their brilliant iridescent violet gorgets to dazzle females. Despite their tiny stature, they are remarkably bold and often cock their short, forked tails at jaunty angles or wag them vigorously while feeding. They are also known as "trap-liners," meticulously memorizing the locations of specific flowers and visiting them in a precise, repeating circuit throughout the day.

Habitats & Distribution

This species is primarily restricted to the humid Chocó bioregion along the Pacific slope of the Andes. Its geographical range extends from western Colombia through western Ecuador, reaching its southern limit in the extreme northwestern corner of Peru. Within this range, it is generally found in specific altitudinal belts where moisture levels are high. Its preferred habitats include the canopy and edges of montane evergreen forests, cloud forests, and older secondary growth. It is also frequently observed in more open environments such as clearings, plantations, and gardens where flowering shrubs are present. While it typically occupies elevations between 1,000 and 2,400 meters, it may occasionally be found as low as 600 meters or as high as 3,000 meters depending on local conditions and seasonal food availability.

Behaviours & Reproduction

These hummingbirds are primarily solitary and exhibit highly territorial behavior, with males aggressively defending nectar-rich feeding territories. Their flight is notably erratic and bee-like, characterized by rapid wingbeats and a low-pitched hum. During the breeding season, males employ a polygynous mating strategy, performing spectacular aerial displays to attract multiple partners. These displays often include high-speed U-shaped dives and rhythmic side-to-side "shuttling" movements, during which the male prominently flashes his iridescent purple throat to the female. The female takes full responsibility for the reproductive cycle after mating, including nest building and chick rearing. She constructs a tiny, camouflaged cup nest using plant down, moss, and spider silk, typically positioned on a thin, horizontal branch. A clutch usually consists of two small white eggs, which the female incubates alone. To ensure the survival of the offspring, she provides a diet of nectar and small arthropods, the latter being essential for the protein required during the chicks' rapid development.

Diet

The Purple-throated Woodstar sustains its high-energy lifestyle primarily through the consumption of nectar from a variety of flowering plants, including species within the genera Inga, Calliandra, and Stachytarpheta. These tiny hummingbirds are frequently observed foraging in the canopy or sub-canopy, where they use their specialized bills and long tongues to extract sugar-rich fluids from both native and ornamental blooms. To supplement their carbohydrate-heavy diet with essential proteins and minerals, they also hunt small arthropods and insects, often capturing them mid-air through a technique known as hawking or gleaning them directly from foliage. An interesting aspect of their feeding strategy is their ability to exploit smaller or less conspicuous flowers that are often overlooked by larger, more dominant hummingbird species, allowing them to carve out a niche in competitive tropical environments. Furthermore, because of their exceptionally small body mass, they must feed almost continuously throughout the day to maintain their metabolic demands, sometimes consuming more than their total body weight in nectar and prey daily.

Colors

The Purple-throated Woodstar is characterized by the male's brilliant iridescent violet throat and white breast band, set against dark bronzy-green upperparts and a deeply forked tail. Both sexes possess prominent white patches on the flanks and lower back, though females feature buff-colored underparts and lack the purple gorget. Their dark metallic green plumage provides camouflage against forest foliage, while the specific white markings serve as diagnostic visual signals during flight.

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