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Brown-Capped Rosy-Finch

leucosticte australis

The Brown-Capped Rosy-Finch (Leucosticte australis) is a hardy passerine bird known for its remarkable adaptation to extreme alpine environments. This species is native to the high peaks of the southern Rocky Mountains, where it thrives in harsh, cold conditions year-round, often foraging around permanent snowfields and glaciers. These social birds are a delight to spot for their striking plumage and their ability to withstand altitudes where few other avian species venture. They are truly emblematic of North American high-altitude wildlife, representing resilience and specialized ecological niches.

Lebensraum: Typically found in rugged, barren alpine tundra and subalpine zones, often foraging on rocky slopes, cliffs, and around permanent snowfields or glaciers above the tree line.

Aussehen

This medium-sized finch features a distinctive brown crown and nape that contrast with a gray face and throat. Its body plumage is primarily brownish, with a beautiful rosy-pink wash on the belly, flanks, and wing-linings, which becomes more vibrant in breeding males. The back is streaked with black, and it has a relatively short, conical bill suited for seed eating. Its tail is moderately long and slightly forked, and it sports dark legs and feet.

ReichAnimaliaStammChordataKlasseAvesOrdnungPasseriformesFamilieFringillidaeGattungLeucosticte

Brown-Capped Rosy-Finch

Kategorie

Vögel

Seltenheit

Common

Gefahr

1/5 · Sehr gering

Snaps

Mach den ersten Snap!

Interessante Fakten

Brown-Capped Rosy-Finches are part of a 'superspecies' complex with the Gray-Crowned and Black Rosy-Finches, all adapted to similar cold, high-altitude environments.

The Brown-Capped Rosy-Finch is considered one of North America's highest-dwelling birds, nesting and foraging at elevations exceeding 3,700 meters (12,000 feet) and sometimes much higher.

These birds are incredibly social outside of the breeding season, forming large flocks of hundreds or even thousands of individuals that move together across the winter landscape.

Unlike most migratory birds, rosy-finches often move to lower elevations during winter rather than south, making them 'altitudinal migrants'.

Besondere Fähigkeiten

Brown-Capped Rosy-Finches possess physiological adaptations, including dense plumage and a high metabolic rate, allowing them to survive and forage in temperatures well below freezing, even during harsh alpine winters.

These finches are adept at foraging for insects that become trapped or frozen on snowfields and glaciers, providing a unique food source in an otherwise barren environment, especially during summer months.

They are among the highest-nesting birds in North America, constructing their nests in crevices and under ledges on cliffs in exposed alpine terrain, far above the timberline.

Maße und Details

Länge: 14-16 cm
Flügelspannweite: 28-30 cm
Gewicht: 0.02-0.03 kg
Lebenserwartung: 3-5 Jahre
Top Speed: 55 km/h
Gelegegröße: 4-6
Brutzeit: 12-14 Tage

Ernährung und Fütterung

The Brown-Capped Rosy-Finch primarily consumes seeds and insects, with its diet varying seasonally based on availability. Seeds form a significant part of their winter diet, while insects are crucial during the breeding season.

Hauptnahrung

Alpine plant seeds
Weed seeds
Beetles
Flies
Spiders
Caterpillars

Nahrungssuche

Foraging

Ökologische Zusammenhänge

eaten by

Prairie Falcon

Falco mexicanus

A primary predator that preys on finches in high-alpine environments.

eats

Alpine Avens

Geum rossii

Consumes various seeds from alpine plants, acting as a seed disperser.

eats

High-altitude Fly

various Diptera species

Forages on insects, including flies, that are found in alpine habitats.

competitor

Gray-Crowned Rosy-Finch

Leucosticte tephrocotis

Competes for food resources and nesting sites, especially when ranges overlap.

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Sicherheit

Gefahr

1/5 · Sehr gering

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Häufig gestellte Fragen

Wie identifiziert man Brown-Capped Rosy-Finch?

Der einfachste Weg, Brown-Capped Rosy-Finch zu bestimmen, ist die Verwendung der Naturführer-App Snappit.

Was ist der/die/das länge von Brown-Capped Rosy-Finch?

14-16 cm

Was ist der/die/das flügelspannweite von Brown-Capped Rosy-Finch?

28-30 cm

Was ist der/die/das gewicht von Brown-Capped Rosy-Finch?

0.02-0.03 kg

Was ist der/die/das lebenserwartung von Brown-Capped Rosy-Finch?

3-5 Jahre

Was ist der/die/das top Speed von Brown-Capped Rosy-Finch?

55 km/h

Was frisst Brown-Capped Rosy-Finch?

Wo findet man Brown-Capped Rosy-Finch normalerweise?

Typically found in rugged, barren alpine tundra and subalpine zones, often foraging on rocky slopes, cliffs, and around permanent snowfields or glaciers above the tree line.