Long-billed crombec

The long-billed crombec or Cape crombec (Sylvietta rufescens) is an African warbler.

Long-billed crombec
Conservation status
Least Concern  (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Passeriformes
Family:	Macrosphenidae
Genus:	Sylvietta
Species:	S. rufescens
Binomial name
Sylvietta rufescens (Vieillot, 1817)

S. r. resurga, Kruger National Park

The long-billed crombec breeds in southern Africa from the Democratic Republic of the Congo, Zambia and Tanzania southwards to South Africa.

This is a common species in fynbos, open woodland, savannah and dry Acacia scrub.

Description

The long-billed crombec is a small, nearly tailless bird 12 cm long and weighing around 16 g. Its upperparts are brownish grey-brown, and there is a pale grey supercilium, separated from the whitish throat by a dark eye stripe. The whitish breast shades into the buff belly. The long slightly curved bill is blackish.

The sexes are similar, and the juvenile resembles the adult. The call is a variable series of trilled notes including trreee-rriiit trreee-rriiit and a harsh pttt.

Behaviour

Long-billed crombec building a nest

The long-billed crombec's nest is a large, hanging bag of grasses, spider webs, and plant fibres, which is attached to the lower limbs of a tree, often an Acacia. The one to three white eggs are incubated for two weeks to hatching, and the chicks are fed by both parents for another two weeks to fledging. This territorial species is monogamous, pairing for life.

This bird is usually seen alone, in pairs, or in family groups as it forages methodically from the bottom to the top of bushes and trees for insects and grass seeds. It will join mixed-species feeding flocks.

It moves between trees with a bouncy flight.

Conservation status

This common species has a large range, with an estimated extent of 4,500,000 km². The population size is believed to be large, and the species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e. declining more than 30% in ten years or three generations). For these reasons, the species is evaluated as least concern.

References

• Ian Sinclair, Phil Hockey and Warwick Tarboton, SASOL Birds of Southern Africa (Struik 2002) ISBN 1-86872-721-1

External links

• Long-billed crombec - Species text in The Atlas of Southern African Birds.