• BirdForum is the net's largest birding community, dedicated to wild birds and birding, and is absolutely FREE!

    You are most welcome to register for an account, which allows you to take part in lively discussions in the forum, post your pictures in the gallery and more.

Cape Grassbird - BirdForum Opus

Photo by the late Jan Van den Broeck
Goudini Spa, South Africa, May 2004

Alternative name: Cape Grass-Warbler

Sphenoeacus afer

Identification

Length 19-23 cm, mass 27-34 g.
Adult: Crown and ear coverts rusty red, streaked black on hindcrown and nape. There are two black malar stripes on each side of the pale buff throat. The back is black streaked buff and the rump is rufous. The underparts are buff with black streaks on the flanks. The tail is rufous and fairly long, often looking untidy as the rectrices have pointed tips.
Immature: Similar to the adult, but duller, and with dark streaks on the crown.

Distribution

Southern Africa: Southern and eastern South Africa, Lesotho, Swaziland, eastern Zimbabwe highlands and adjacent Mozambique highlands.

Taxonomy

The only species in the genus Sphenoeacus. Recent molecular studies indicate that this species is one of a group of African warblers which includes the Sylvietta crombecs, Rockrunner Achaetops pycnopygius, Victorin's Warbler Cryptillus (or Bradypterus) victorini, and Yellow Longbill Macrosphenus flavicans (Beresford et al. 2005).

Subspecies[1]

There are four subspecies based on size and the varying intensity of the colour of the upperparts and of the streaking of the underparts.

  • S. a. excisus:
  • S. a. natalensis:
  • S. a. intermedius:
  • Lesotho to Transkei and Port Elizabeth
  • S. a. afer:
  • South-western Cape Province

Habitat

Rank and shrubby grasslands, Restio fynbos, bracken and heath.

Behaviour

Generally inconspicuous as it forages on the ground in rank vegetation, but in the early morning frequently sunbathes on, or calls from, a prominent perch.

References

  1. Clements, JF. 2009. The Clements Checklist of Birds of the World. 6th ed., with updates to December 2009. Ithaca: Cornell Univ. Press. ISBN 978-0801445019.
  2. Beresford P, Barker FK, Ryan PG & Crowe T M 2005. African endemics span the tree of songbirds (Passeri): molecular systematics of several evolutionary ‘enigmas’. Proc. R. Soc. B 272, 849–858.
  3. Hockey, PAR, WRJ Dean, and PG Ryan, eds. 2005. Roberts' Birds of Southern Africa. 7th ed. Cape Town: John Voelcker Bird Book Fund. ISBN 978-0620340533

Recommended Citation

External Links

Top