What kind of the bird is on the tree?

What kind of the bird is on the tree? There is a bird on the tree.on the tree or in the tree The apple is the on tree and the bird is the in tree the bird is _____the tree There is a bird on the tree这句话对不对 There are many oranges（ on ）the tree.A bird （on ）the tree is The bird in the tree is black. Look!The bird is （ ） the tree. Where is the bird?It is on the tree.Is it singing?No,it is _ The bird is singing on the t_____ of the house. What kind of rock is the rock on the bottom of Changjian Riv a bird is（） the tree