Locustellidae

Locustellidae
Locustellidae
Striated Grassbird, Megalurus palustris
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Superfamily: Sylvioidea
Family: Locustellidae
Bonaparte, 1854
Genera

Bradypterus
Cincloramphus
Locustella
Megalurus
Schoenicola
Elaphrornis
and see text

Synonyms

Megaluridae (Blyth, 1875)

Locustellidae is a newly recognized family of small insectivorous songbirds ("warblers"), formerly placed in the Old World warbler "wastebin" family. It contains the grass-warblers, grassbirds, and the Bradypterus "bush-warblers". These birds occur mainly in Eurasia, Africa, and the Australian region. The family name is sometimes given as Megaluridae, but Locustellidae has priority.[1]

The species are smallish birds with tails that are usually long and pointed; the scientific name of the genus Megalurus in fact means "the large-tailed one" in plain English. They are less wren-like than the typical shrub-warblers (Cettia) but like these drab brownish or buffy all over. They tend to be larger and slimmer than Cettia though, and many have bold dark streaks on wings and/or underside. Most live in scrubland and frequently hunt food by clambering through thick tangled growth or pursuing it on the ground; they are perhaps the most terrestrial of the "warblers". Very unusual for Passeriformes, beginning evolution towards flightlessness is seen in some taxa.[2]

Among the "warbler and babbler" superfamily Sylvioidea, the Locustellidae are closest to the Malagasy warblers, another newly-recognized (and hitherto unnamed) family; the Black-capped Donacobius (Donacobius atricapillus) is an American relative derived from the same ancestral stock and not a wren as was long believed.[1]

Genera

  • Bradypterus – Megalurid bush-warblers (more than 20 species; paraphyletic[3])
  • Elaphrornis – Sri Lanka Bush-warbler
  • Locustella – grass-warblers (9 species)
  • Megalurus – typical grassbirds (5 species; probably polyphyletic)
  • Schoenicola – wide-tailed grassbirds (2 species; tentatively placed here)
  • Cincloramphus – songlarks (2 species; tentatively placed here)

Several other (usually small or monotypic) genera are suspected to belong here too:

  • Bowdleria – fernbirds (1 living species, 1 recently extinct; sometimes included in Megalurus)
  • Buettikoferella – Buff-banded Bushbird
  • Chaetornis – Bristled Grassbird
  • Dromaeocercus – emu-tails (2 species, includes Amphilais)
  • Eremiornis – Spinifex-bird
  • Megalurulus – thicketbirds (5 species)

Footnotes

  1. ^ a b Alström et al. (2006)
  2. ^ del Hoyo et al. (2006)
  3. ^ At least one species - Victorin's Warbler - does not belong in the Locustellidae at all (Beresford et al., 2005).

References