Vedova alibianche

Euplectes albonotatus

Il maschio in abito nuziale è nero con un becco azzurro pallido, spalline alari dai colori vivaci (castane nell'Africa nord-orientale, gialle altrove), e pannelli alari bianchi diagnostici che sono più evidenti in volo. La parata distintiva è un lento battito d'ali simile a quello di una farfalla. Il maschio non riproduttivo è fulvo e striato, ma mantiene le spalline alari e il pannello alare. La femmina manca del disegno alare e ha un ventre pallido non striato. Coppie e stormi sono residenti con movimenti locali in savane aperte, praterie arbustive, paludi e aree coltivate.

Identificazione

The white-winged widowbird is 15 to 19 cm (5.9–7.5 in) in length and about 23 g (0.81 oz) in weight. The male is the only short-tailed widowbird in its region with white on its coverts. The breeding male is distinguished from the yellow-mantled widowbird by its shorter tail, wing color, lack of yellow on its back, and paler bill. Females are pale below.

Tassonomia

The white-winged widowbird was first described by the American ornithologist John Cassin in 1848. Hybrids with "red bishops", probably northern red bishop (E. franciscanus), have been reported in captivity. Non-captive interbreeding of race eques with nominate appears to occur in southern Tanzania, but they appear to stay segregated in Burundi and western Tanzania. A proposal has been made for race sassii, which is found along the northwestern shore of Lake Tanganyika. Alternate common names include: white-fronted/white-shouldered widowbird, white-winged/white-shouldered whydah, long-tailed black whydah.<p>Three subspecies of the white-winged widowbird are now recognized.

Nome scientifico
Euplectes albonotatus
Autorità
(Cassin, 1848)
Ordine
Passeriformi
Famiglia
Ploceidae
Genere
Euplectes

Areale e habitat

The white-winged widowbird is found in Angola, Botswana, Burundi, Central African Republic, the Republic of the Congo, the Democratic Republic of the Congo, Ethiopia, Eswatini, Gabon, Kenya, Malawi, Mozambique, Namibia, Rwanda, São Tomé, South Africa, Sudan, Tanzania, Uganda, Zambia, and Zimbabwe. Its preferred habitats are savanna, grasslands and wetlands, as well as cultivated land. Its call is "zeh-zeh-zeh" and "witz-witz-witz".

Migrazione
Resident species

Comportamento

The white-winged widowbird is polygynous, with one male mating with 3–4 females, and lives in flocks. Oval nests, built solely by the male, are located in the branches of trees or shrubs. Nesting takes place from November to May, peaking from December to March. The female will lay a clutch of two to four white eggs, which she will incubate for 12–14 days. Feeding of chicks is done by the female in the nest for 11–14 days, with chick independence coming 22–25 days later. This bird mainly eats grass seeds, nectar, and insects.

Conservazione

Tendenza della popolazione
stable

Foto

Distribuzione

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