Black-thighed Grosbeaks

Black-thighed Grosbeak, Pheucticus tibialis


Overview ... Alternate (Global) Names

Distribution / Habitat ... Description ... Calls / Vocalizations

Breeding / Nesting ... Diet / Feeding


The Black-thighed Grosbeaks (Pheucticus tibialis) are members of the Cardinal family found in Central America. This race is mostly considered a full species; however, some consider the Black-thighed Grosbeak to be a subspecies of the Yellow Grosbeak or Mexican Yellow Grosbeak (Pheucticus chrysopeplus).


Distribution / Habitat

The Black-thighed Grosbeaks occur naturally in the highlands of Costa Rica and western Panama, where they inhabit the humid montane forests of the Pacific slope - from an elevation of 3,300 feet or 1,000 meters - or the Caribbean slope - from 5,000 feet or 1,500 meters up to about 8,500 feet or 2,600 meters.

Their preferred habitats are humid montane forests, edges of forests and semi-open habitats (such as pasture with some trees).

These birds are usually seen alone or in pairs.


Description

Size

Average Length: 7.9 inches or 20 cm

Average Weight: 2.5 oz or 70 grams

Plumage Details

The male can be identified by his yellow head, rump and underparts. He has an olive-edged black back. The wings, tail and thighs are black. There is a white patch on the wings.

The female is generally paler; she has more olive on the back. The white wing patch is smaller.

Immature birds have a duller, more olive-tinged plumage, with some streaking and mottling.

Other Physical Details

Large grey bill; darker upper bill; horn-colored lower bill.

Darkish legs and feet.

Similar Birds

Yellow Grosbeak (Pheucticus chrysopeplus) found in western Mexico and Guatemala

Golden-bellied Grosbeak (Pheucticus chrysogaster) found in the Andes of South America

These three species are sometimes considered one and the same.


Diet / Feeding

The Black-thighed Grosbeak feed on seeds, insects, fruits and berries. They typically forage high in trees or in shrubs.


Breeding / Nesting

Most nesting occurs between March and May. Their cup nests are constructed out of twigs and placed about 3 - 10 feet (~ 1 - 3 meters) up in small trees or amongst vines.

The average clutch consists of two brown-spotted pale blue eggs.


Calls / Vocalizations / Sounds

Its call is described as a sharp pink.

Its song consists of a musical stream of warbles, whistles, trills and slurs.


Alternate (Global) Names

Chinese: ?????? ... Czech: dlaskovec ?ernonohý, Kardinál cernonohý ... Danish: Sortlåret Kernebider ... Dutch: Zwartdijkardinaal ... Finnish: Kultakardinaali ... French: Cardinal à cuisses noires, Casse-graine à cuisses noires, Grosbec à cuisses noires, Gros-bec à cuisses noires ... German: Schwarzschenkel-Kernkancker ... Italian: Beccogrosso dai calzoni neri, Beccogrosso zampenere ... Japanese: kuromomoougonikaru ... Norwegian: Svartleggtykknebb ... Polish: luszcz czarnogoleniowy ... Slovak: glezgovec hájový ... Spanish: Picogrueso Muslinegro, Picogrueso vientriamarillo, Piquigrueso de Piernas Negras ... Swedish: Svartbent kardinal


Species Research by Sibylle Johnson



Please Note: The articles or images on this page are the sole property of the authors or photographers. Please contact them directly with respect to any copyright or licensing questions. Thank you.

Comments