Gone are the days when all you could buy was mass-produced, roller-ground, plain, strong, self-raising or wholemeal.
Until recently the ground rollers, cuckoo roller, and rollers were all placed in a single family, Coraciidae, in which each of the three groups formed a subfamily.
These differences make the long-tailed ground roller the only ground roller to definitively display sexual dimorphism.
It has been speculated that the ancestor of the long-tailed ground roller was an arboreal roller that crossed over from Africa to Madagascar and developed a terrestrial lifestyle before moving from the rainforests into the long-tailed ground roller's arid scrubland.
The long-tailed ground roller is the only ground roller to definitively display sexual dimorphism (differences in plumage or size between sexes).
The long-tailed ground roller is placed in the ground roller family, which gets its common name due to its similarity to the rollers and its largely terrestrial nature.
The family is sometimes considered to include the ground rollers and cuckoo rollers.
The long-tailed ground roller (Uratelornis chimaera) is a species of bird in the ground roller family Brachypteraciidae, placed in the monotypic genus Uratelornis.
Classified as vulnerable by the IUCN due to ongoing habitat destruction and a decline in the quality of the remaining habitat, the long-tailed ground roller is believed to be the most threatened species of ground roller.
This paper describes an experimental method to investigate the effect of surface lay on lubricated rolling/sliding of ground roller surfaces.
