Once a day, The bad fox came to the birds nest and take her tiny babies and jailed them in cages.
The fox make obstacles for her to get her babies out of cages, He tided the cages door with rope and when the bird cut the laser line then the gear rotate and open the door.
But sorry the bird is blind and can only jump, She is strong and just need the players help.
Try to make her happy by returning her babies.