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Ground-roller (Family: Brachypteraciidae) - Wiki latin dict size=87   common dict size=512
Image Info Original File Name: Scaly Ground-roller (Brachypteracias squamiger).jpg Resolution: 500x375 File Size: 176460 Bytes Upload Time: 2007:12:06 22:05:43
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Subject Ground-roller (Family: Brachypteraciidae) - Wiki

Ground-roller (Family: Brachypteraciidae) - Wiki; Image ONLY
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Ground-roller (Family: Brachypteraciidae) - Wiki

Ground-roller
From Wikipedia, the free encyclopedia

Order: Coraciiformes
Family: Brachypteraciidae
Synonyms: Atelornithidae

[Photo] Scaly Ground-roller (Brachypteracias squamiger). Source: Flickr (www.flickr.com/photos/rjm284/365355307/). Date: 2006-12-13. Author: rjm284 (www.flickr.com/photos/rjm284/).

The ground-rollers are a small family of non-migratory near-passerine birds restricted to Madagascar.

They are related to the kingfishers, bee-eaters and rollers. They most resemble the latter group, and are sometimes considered a sub-family of the true rollers. They share the generally crow-like size and build of that group, and also hunt reptiles and large insects. They are more terrestrial than the Coracidae species, and this is reflected in their longer legs and shorter, more rounded wings.

They lack the highly colourful appearance of the true rollers, and are duller in appearance. They are much more elusive and shy than their relatives, and are normally difficult to find in the Malagasy forests. Often the hooting breeding call is all that betrays their presence.

These birds nest as solitary pairs in holes in the ground which they excavate themselves, unlike the true rollers, which rarely nest in ground holes and even then do not dig their own nests.

mtDNA analyses confirmed the systematics of this group but indicated that merging Geobiastes into Brachypteracias, as was usually done since the 1960s, should be reverted at least until a more comprehensive review (e.g. supported by fossils) is possible (Kirchman et al., 2001). There is presently no fossil record of ground-rollers; Eocene remains from Europe at first tentatively assigned to this family were later recognized as quite distinct (Mayr & Mourer-Chauvir?? 2000). Presently, there is no indication that ground-rollers ever occurred anywhere outside Madagascar (Mayr & Mourer-Chauvir??, 2001).

There are five species in four genera:

Short-legged Ground Roller, Brachypteracias leptosomus
Scaly Ground Roller, Geobiastes squamiger
Long-tailed Ground Roller, Uratelornis chimaera
Pitta-like Ground Roller, Atelornis pittoides
Rufous-headed Ground Roller, Atelornis crossleyi

http://en.wikipedia.org/wiki/Brachypteraciidae
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