Molecular Biology and Genetics
Statistics of barcoding coverage
|Specimen Records:||30||Public Records:||15|
|Specimens with Sequences:||21||Public Species:||5|
|Specimens with Barcodes:||21||Public BINs:||5|
|Species With Barcodes:||7|
Glareolidae is a family of birds in the wader suborder Charadri. It contains two distinct groups, the pratincoles and the coursers. The coursers include the atypical Egyptian Plover, Pluvianus aegyptius, which has sometimes been placed in its own family. The family contains 17 species in five 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.
Distribution and habitat
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 inhabit 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 and Egyptian Plover 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.
Some species of pratincole are long-distance migrants. Shorter migrations include those of the Madagascar Pratincole, which migrates from its breeding grounds in Madagascar to East Africa; in contrast the Black-winged Pratincole migrates from the steppes of Eastern Europe and Central Asia to West and Southern Africa. The migration, which can measure 10,000 km in distance, is often undertaken as a single non-stop flight and is flown at high altitude. The coursers are not particularly migratory, although the Cream-coloured Courser does migrate from the northern extremes of its range in the winter. The coursers are fairly nomadic, but do not undertake long distance migrations.
The coursers are crepuscular and nocturnal in their habits, and are generally inconspicuous, particularly the woodland species. They are not as social as the highly gregarious and noisy pratincoles, some species of which may also active at dawn and dusk.
Diet and feeding
Insects form the majority of the diet of the Glareolidae. The pratincoles forage mainly on the wing, but are able to take prey on the ground as well. They are opportunistic, and have been recorded attending herds of antelope to snatch insects flushed up by their movement, or even insects attracted to street lights. Swarming insects, such as locusts or termites, are particularly targeted. Coursers are exclusively terrestrial, and feed in a plover-like fashion, running, then stopping to scan for prey before moving on. Some species may dig for insects win soft soil with their bills. In addition to insects coursers may also take molluscs and some seeds.
The Pratincoles or Greywaders are a group of birds which together with the coursers and Egyptian Plover make up the family Glareolidae. They have short legs, very long pointed wings and long forked tails.
Their most unusual feature for birds classed as waders is that they typically hunt their insect prey on the wing like swallows, although they can also feed on the ground. Their short bills are an adaptation to aerial feeding.
Their flight is fast and graceful like a swallow or a tern, with many twists and turns to pursue their prey. They are most active at dawn and dusk, resting in the warmest part of the day.
Like the coursers, the pratincoles are found in warmer parts of the Old World, from southern Europe and Africa east through Asia to Australia. Species breeding in temperate regions are long distance migrants.
Their two to four eggs are laid on the ground in a bare scrape.
The Australian Pratincole, the only species not in the genus Glareola, is more terrestrial than the other pratincoles, and may be intermediate between this group and the coursers.
- Genus Stiltia
- Genus Glareola
- Shorebirds by Hayman, Marchant and Prater ISBN 0-395-60237-8
The Coursers are a group of birds which together with the pratincoles make up the family Glareolidae. They have long legs, short wings and long pointed bills which curve downwards. Their most unusual feature for birds classed as waders is that they inhabit deserts and similar arid regions.
They have cryptic plumage and crouch down when alarmed to avoid detection by predators.
Like the pratincoles, the coursers are found in warmer parts of the Old World. They hunt insects by running.
Their 2-3 eggs are laid on the ground.
Species in taxonomic order
- Cream-coloured Courser Cursorius cursor
- Temminck's Courser Cursorius temminckii
- Indian Courser Cursorius coromandelius
- Burchell's Courser Cursorius rufus
- Two-banded Courser Rhinoptilus africanus
- Heuglin's Courser Rhinoptilus cinctus
- Violet-tipped Courser or Bronze-winged courser, Rhinoptilus chalcopterus
- Jerdon's Courser Rhinoptilus bitorquatus
- Hayman, Marchant and Prater, Shorebirds ISBN 0-395-37903-2
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