White-whiskered Hermit
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Quick Facts
- Scientific Name: Phaethornis yaruqui
- Spanish Name: Ermitaño bigotiblanco
- Family: Trochilidae
- Known Nicknames: White-whiskered Hermit Hummingbird
- Average Length: 13–15 cm / 5.1–5.9 in
- Average Weight: 5–6.5 g / 0.18–0.23 oz
- Wingspan: N/A
- Key Feature: Long, decurved bill and bold white malar stripes
- Primary Diet: Nectarivore (primarily nectar, also small arthropods)
- Range: Pacific slope of western Colombia and western Ecuador
- Habitat: Lowland and foothill humid forest, forest edges, and secondary growth
- Social Structure: Solitary (except during breeding)
- Nesting/Breeding: Pyriform (pear-shaped) nest suspended from underside of a drooping leaf or root
- Conservation Status: Least Concern (LC)
- Population Trend: Stable
The White-whiskered Hermit (*Phaethornis yaruqui*) is a striking hummingbird of the Andean cloud forests, renowned for its elongated, decurved bill and distinctive facial markings. Its plumage is primarily a rich, iridescent green above and a dusky gray below, but its most notable features are the bold white malar stripes—the "whiskers"—that frame its dark mask, and a long, white-tipped tail that flashes during its hovering flight. A master of trapline foraging, this hermit visits a circuit of specific flowers, using its specialized bill to access nectar from deep, curved blossoms, and it is also a key pollinator for plants like the *Heliconia*. Its unique, metallic "tsip" call and habit of pumping its tail while feeding make it a captivating presence in the dense understory.
Fun Facts
The white-whiskered hermit is a master of aerial acrobatics, often seen hanging upside down like a feathered bat to pluck nectar from flowers, a behavior that also helps it avoid competition. Its long, decurved bill is perfectly adapted for probing deep into trumpet-shaped blossoms, and it uses its namesake white whiskers as tactile sensors to navigate dense, dark understory. This bird has a bizarre habit of repeatedly wagging its tail while hovering, a motion that likely startles insects into movement for an easy protein snack. Despite being a hummingbird, it rarely sings a typical melody; instead, males gather in loose leks and produce a loud, metallic, buzzing "zhee-zhee" sound by rapidly fluttering their wings, a unique courtship display that sounds more like a broken machine than a bird.
Habitats & Distribution
The White-whiskered Hermit is found in the humid lowlands and foothills of western Colombia and western Ecuador, from sea level up to about 1,500 meters. It primarily inhabits the interior and edges of mature tropical rainforest, as well as secondary forest, coffee plantations, and other shaded habitats with dense understory. This species is often associated with stream corridors and areas rich in flowering plants, particularly Heliconia, which provide nectar sources. Its range is restricted to the Pacific slope of the Andes, stretching from the Chocó region of Colombia southward into Ecuador.
Behaviours & Reproduction
The White-whiskered Hermit is a solitary, non-territorial hummingbird. Males gather at traditional display sites called leks, where they sing from low perches to attract females, engaging in competitive vocalizations rather than aggressive physical combat. Females visit these leks to select a mate, after which they alone construct a cup-shaped nest, incubate the two white eggs for about 17-18 days, and feed the chicks for roughly three weeks before fledging. A unique reproductive strategy is that males provide no parental care; instead, they invest all energy into defending a singing perch and courting multiple females, maximizing their mating opportunities through lekking behavior.
Diet
The White-whiskered Hermit is a specialized nectarivore, relying almost exclusively on the sugary nectar from long, tubular flowers, particularly those of heliconias, passionflowers, and other understory plants. To extract this nectar, it uses its long, decurved bill and a forked, brush-tipped tongue. A fascinating aspect of its feeding behavior is that it is a "trap-line" forager, meaning it follows a repeated, private route through the forest, visiting a specific sequence of flowers at precise times of day to coincide with peak nectar production. Unlike many other hummingbirds, it does not aggressively defend a single territory but instead relies on this stealthy, efficient circuit to avoid competition.
Colors
The White-whiskered Hermit is primarily dull green above, with a dark brownish tail tipped in white. Its underparts are a paler, grayish-brown, and the most distinctive feature is the bold white malar stripe (the "whisker") bordered by black, contrasting with a dark, mask-like face. This cryptic coloration, combined with a long, decurved bill, helps it blend into the dappled light of its understory forest habitat.
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