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.
From Wikipedia http://en.wikipedia.org/wiki/Glareolidae