Picchio dorsoscaratto

Identificazione

The scarlet-backed woodpecker is about 13 cm (5.1 in) long and weighs 23 to 33 g (0.81 to 1.2 oz). Males and females have the same plumage except on their heads. Adults of both sexes of the nominate subspecies have a generally grayish brown and white face. Males are red from forehead to nape with black tips on many feathers. The female is entirely black there. Both sexes' upperparts are brownish-scarlet. Their flight feathers are dark brown with redder secondaries and tertials. Their tail is blackish-brown whose central pair of feathers is blacker and the outer pair whitish yellow with black bars. Their underparts are white with a very light buff wash and sometimes darker but faint vermiculation. The iris is deep brown (occasionally deep red), the beak yellowish with darker base and tip, and the legs are greenish gray. Juveniles have heavy olive or grayish mottling on their upperparts and are buffier white on their underparts. Their head pattern is more diffuse than the adults'. Adults of subspecies V. c. major have a darker face and darker vermiculation on the underparts than the nominate.

Tassonomia

The International Ornithological Committee and BirdLife International's Handbook of the Birds of the World place the scarlet-backed woodpecker in genus Veniliornis. However, starting in 2018, the American Ornithological Society and the Clements taxonomy moved all species of genus Veniliornis into genus Dryobates.<p>The above taxonomic systems recognize two subspecies, the nominate V. c. callonotus and V. c. major (Berlepsch &amp; Taczanowski, 1884):

Nome scientifico

Dryobates callonotus

Autorità

(Waterhouse, 1841)

Ordine

Piciformi

Famiglia

Picidae

Genere

Dryobates

Areale e habitat

The nominate subspecies of scarlet-backed woodpecker is found from Colombia's Nariño Department south through western Ecuador to Guayas Province. V. c. major is found from El Oro and Loja provinces in Ecuador south into Peru as far as La Libertad Department. The species inhabits arid scrublands, dry deciduous woodland, semi-humid forest, dense riparian forest, and sometimes partially cleared areas. In elevation it mostly occurs from near sea level to 1,000 m (3,300 ft), less frequently to 1,500 m (4,900 ft) in Peru, and locally as high as 1,800 m (5,900 ft) in Ecuador.

Migrazione

Resident species

Comportamento

As far as is known, the scarlet-backed woodpecker is a year-round resident throughout its range. <p>The scarlet-backed woodpecker forages at all levels of the forest, usually on small branches and thin twigs, and often in pairs. No details of its diet are known. <p>The scarlet-backed woodpecker's breeding season includes July in Ecuador but essentially nothing else is known about its breeding biology.<p>The scarlet-backed woodpecker's most common call is "a rattle, 1-2 seconds long". It also makes a "sharp 'ki-dik', sometimes in short fast series."

Conservazione

Tendenza della popolazione

rising