Tessitore nucanera

Identificazione

The black-necked weaver is a stocky 16 cm bird with a strong conical bill. The adult male of the northern race has olive upper-parts and wings, and yellow underparts and head. It has a black eye-mask and bib, and a pale yellow iris. The non-breeding male has a yellow head with an olive crown, grey upper-parts and whitish. The wings remain yellow and black.<p>The adult female also has olive upper-parts and wings, and yellow underparts and head. It has a black eyemask but no bib.<p>The southern race found from Nigeria eastwards has a quite different appearance, with almost black upper-parts and tail.<p>The black-necked weaver feeds on insects and vegetable matter. The calls of this bird include a wheezing dew-dew-twee .

Tassonomia

The species was formally described in 1805 by the French ornithologist Louis Pierre Vieillot, who named it Malimbus nigricollis. The description was based on a specimen that had been collected near Malimbe, now Malembo, in the Cabinda Province of Angola. The species epithet nigricollis combines the Latin words Latin words, niger meaning "black" and collis meaning "necked".<p>There are two subspecies recognized:<p>The black-necked weaver was formerly considered to be conspecific with the olive-naped weaver. The two species differ in plumage and in the colour of the iris. A molecular study published in 2019 found that the two species are genetically very similar.

Nome scientifico

Ploceus nigricollis

Autorità

(Vieillot, 1805)

Ordine

Passeriformi

Famiglia

Ploceidae

Genere

Ploceus

Areale e habitat

This weaver occurs in forests, especially in wet habitats.

Migrazione

Resident species

Comportamento

It builds a large coarsely woven nest made of grass and creepers with a 15 cm downward facing entrance tunnel hanging from the globular egg chamber. The nest is suspended from a branch in a tree and 2-3 eggs are laid. It nests in pairs but forms small flocks when not breeding.

Conservazione

Tendenza della popolazione

stable