User:Summy nafriye/sandbox

A compass sense has been demonstrated in the birds; that is, they are able to fly in a particular constant direction, regardless of the position of the release point with respect to the bird's home area. It is also been shown that birds are capable of relating the release point to their home area and of determining which direction to take, then maintaining that direction in flight. The navigation ability of birds has long been understood in terms of presumed sensitivity to both the intensity and the direction of the earth's magnetic field. It has also been suggested that birds are sensitive to force produced by the rotation of the earth; however no sense organ or physiological process sensitive to such forces has yet been demonstrated to support this hypothesis.