Coraciidae Rollers

Stocky birds with large heads, broad shoulders, and stout bills, rollers are united by their method of sit-and-wait predation on large insects, other invertebrates, or even reptiles and rodents. Rollers are named for their acrobatic display flights, in which they dive rapidly toward the ground with wings and body rolling back and forth. Many are a distinctive light blue color overall with darker patches of intense pure blue, though many have a good deal of brown in their plumage. Dollarbirds, named for the shiny white coin-sized patch on each wing, are stockier and darker in color than the other rollers. All are hole-nesters, with white, nearly spherical eggs much like those of many other coraciiform birds.