Not active dove

by Noshin Raisa
(Manhatten,New York)

Hi my pet white dove is not active for some reason.It always slumps down on her perch and its wings shivers and it starts cooing until I take her out of the cage. She always used to be very active. But now its so queit, non-active and just sleeps all the time. Seriously its a YOUNG bird. Its not old. HELP!!!!!!!!! Im worried if its sick.