Question

how gliders and birds make use of air currents

Answer 1

The feather is the primary part of the bird which makes it unique from any other .... of height by holding its wings at a slight angle to an air current, which allows the air to .... Most gliders use the method of being towed into the air via an airplane and Soaring flight is a special kind of glide in which the bird flies in a rising air current (called a thermal). Because the air is rising, the bird can maintain its height relative to the ground. The albatross uses this type of soaring to support its multi-year voyages at sea.