from The Century Dictionary.
- noun One of the Brachypteraciinœ, a group of rollers of the family Coraciidœ, peculiar to Madagascar: so called from their terrestrial habits.
Sorry, no etymologies found.
Out of the above birds, one is threatened (Madagascar teal), and three are considered vulnerable (white-breasted mesite, long-tailed ground-roller, Madagascar plover).
The following species are near-endemic: Madagascar teal (Anas bernieri), Madagascar plover (Charadrius thoracicus), and long-tailed ground-roller (Uratelornis chimaera).
Several endemic bird species such as Crossley's ground-roller (Atelornis crossleyi), cryptic warbler (Cryptosylvicola randianasoloi) and yellow-bellied sunbird-asity (Neodrepanis hypoxantha) occur in the upper portion of these mountains.