Brightly coloured, medium-sized, obtrusive savanna-dwelling birds.
They are best known for the brilliant blue colour of the wings in flight. This is particular apparent during the year round territorial and courtship (when breeding) display of the males. They fly up steeply and then almost stall before diving down steeply with closed wings. After gaining momentum, they open the wings again and level off while rocking from side-to-side along the body axis. They generally do not roll 360° and this 'rolling' behaviour is what gave the birds their name.
Rollers of the genus Coracias tend to hunt by still-hunting from a perch and then pouncing on invertebrate prey on the ground. They ma occasionally hawk prey aerially and some species may also eat small vertebrates.The roller of the genus Eurystomus, the broad-billed roller, has long pointed wings and a relatively short tail - both adaptations for buoyant flight for manouverable aerial feeding.They are monogamous and nest in tree cavities, nest boxes or crevaces in rock faces. They lay 2 - 4 glossy white eggs. Incubation and care of young is undertaken by both sexes

Coracias = a raven, in reference to calls
Eurystomus = broad mouth

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