<trp-post-container data-trp-post-id='359685'>Golden-crowned Kinglet

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Migratrice
  • Scientific Name: Regulus satrapa
  • Spanish Name: Reyezuelo coronidorado
  • Family: Regulidae
  • Known Nicknames: Golden-crowned Kinglet
  • Average Length: 8–11 cm / 3.1–4.3 in
  • Average Weight: 4.5–7.5 g / 0.16–0.26 oz
  • Wingspan: 14–17 cm / 5.5–6.7 in
  • Key Feature: Bright yellow crown patch bordered by black, with a red center in males
  • Régime alimentaire principal : Principalement insectivore
  • Range: North and Central America, from Alaska and Canada south through the United States to Guatemala
  • Habitat: Coniferous and mixed forests, especially spruce and fir
  • Social Structure: Often in small flocks during winter; pairs during breeding season
  • Nesting/Breeding: Hanging nest in conifer branches, often high in the canopy
  • Statut de conservation : Préoccupation mineure (LC)
  • Évolution démographique : Stable

The Golden-crowned Kinglet (*Regulus satrapa*) is a tiny, hyperactive songbird that seems to defy its miniature size with an explosive personality. Barely larger than a hummingbird, this olive-gray bird is distinguished by its striking crown: a bold, lemon-yellow stripe bordered in black for females, and a brilliant, fiery orange center in males, which they flare dramatically when excited or agitated. A unique feature is its incredibly high-pitched, three-part song, often too faint for older human ears to detect, and its specialized foot muscles allow it to hang upside-down like a chickadee while gleaning tiny insects and spiders from conifer needles. Despite weighing less than a nickel, it survives frigid northern winters by entering a state of nocturnal hypothermia, lowering its body temperature to conserve energy—a remarkable adaptation that makes this feathered gem a true powerhouse of the boreal forest.

Faits amusants

Despite weighing less than a dime, the Golden-crowned Kinglet migrates hundreds of miles each year, surviving brutal northern winters by shivering to generate body heat. Their crown feathers, which flash fiery orange in males and yellow in females, are often hidden unless the bird is excited or agitated. A quirky behavior is their constant, hyperactive wing-flicking while foraging—a trait that helps flush out tiny insects from bark crevices. They also build intricate, hanging nests using spiderwebs and lichen, and a single female can lay up to 12 eggs in a clutch, an astonishing number for such a tiny bird.

Habitats et répartition

The Golden-crowned Kinglet primarily inhabits coniferous and mixed forests, especially those dominated by spruce, fir, and hemlock. It prefers mature stands with dense canopy cover, often foraging in the upper branches for insects and spiders. During the breeding season, it occupies montane and boreal forests across Canada, the northeastern United States, the Great Lakes region, and southward into the Appalachian Mountains. In winter, it expands its range into much of the eastern and southern United States, as well as the Pacific Northwest and parts of Mexico, where it can be found in a wider variety of wooded habitats, including deciduous forests and suburban parks.

Comportements & Reproduction

Males arrive on breeding grounds first to establish territories, singing persistently to attract a mate. Pairs form monogamous bonds for the season, though extra-pair copulations are not uncommon. The female builds a deep, cup-shaped nest suspended from conifer branches, often incorporating spiderwebs and moss for elasticity and camouflage. She lays 7–11 eggs, one of the largest clutches relative to body size among North American songbirds, and incubates them alone for about 13 days. Both parents feed the altricial young, which fledge after 14–18 days. A unique reproductive strategy involves the female sometimes starting a second clutch while the male continues feeding the first brood, enabling two successful broods in a short northern summer. Socially, they are highly active in mixed-species foraging flocks outside breeding season, but during nesting they become fiercely territorial, chasing away intruders with sharp, high-pitched calls.

Alimentation

The Golden-crowned Kinglet is an almost exclusively insectivorous bird, with a diet consisting primarily of small arthropods such as spiders, caterpillars, aphids, and the eggs and larvae of various insects. They are remarkably active foragers, often seen hovering briefly to pluck prey from the undersides of leaves and twigs, a behavior known as gleaning. A fascinating aspect of their diet is its extreme seasonality; during winter, when insect prey is scarce, they shift to consuming the eggs of spiders and insects, as well as small dormant arthropods they find in bark crevices. Additionally, they possess a uniquely high metabolic rate for their tiny size, requiring them to consume the equivalent of their own body weight in food each day, which drives them to forage constantly even in sub-zero temperatures.

Couleurs

The Golden-crowned Kinglet is a tiny, olive-gray bird with a striking head pattern: a black-and-white striped face framing a bright yellow-orange central crown patch, bordered by black. Males display a vivid orange center, while females show pure yellow. Its wings feature two white wing bars and subtle yellow-green edges, and the underparts are pale buff. This coloration provides effective camouflage among conifer needles and lichen, with the bright crown often concealed unless the bird is excited.

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