Pratincoles and coursers | |
---|---|
Little pratincole, Glareola lactea | |
Indian courser, Cursorius coromandelicus | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Charadriiformes |
Family: |
Glareolidae CL Brehm, 1831 |
Genera | |
Glareolidae is a family of birds in the wader suborder Charadri. It contains two distinct groups, the pratincoles and the coursers. The atypical Egyptian plover (Pluvianus aegyptius), traditionally placed in this family, is now known to be only distantly related.
The family contains 15 species in 5 genera.
The feature that defines the family from the rest of the order is the bill, which is arched and has the nostrils at the base. The pratincoles have short legs, long pointed wings and long forked tails. They have a buoyant flight that allows them the unusual (for the order) hunting technique of taking their insect prey on the wing like swallows. The wings also allow for long migrations in some species. The coursers have long legs, which are used to run (giving the group its name. The wings are shorter and have a more sustained flight than that of the pratincoles.
The pratincoles and coursers have an Old World distribution, occurring in southern Europe, Asia, Africa (including Madagascar), and Australia. The family is thought to have evolved in Africa, which is where the family achieves its greatest diversity, although fossils of an extinct pratincole have been found in Miocene deposits in France.
The coursers are typically found in open and arid environments such as deserts and scrub. The three-banded courser and bronze-winged courser are exceptions, being found in woodland and usually away from open land. The subfamily is usually also associated with lowland areas, although the Burchell's courser is found in southern Africa's Afro-alpine areas. The pratincoles are associated with wetlands, rivers, estuaries and other inland waterways. As with the coursers there are exceptions, particularly the black-winged pratincole which breeds and feeds on open steppes.