A parrot chicks lower beak naturally has a wide scoop shape to it, that allows for easier filling/feeding. As the chicks grow and develop, they grow into the scoop, lessening it's scoop shape.

The upper and lower beak on a bird are separate beaks co-joined by tissue and muscle. This allows the bird to open it's mouth very wide, or close it tight.

A bird's eye is very tightly fitted into its skull and it is capable of very little movement, therefore birds can often be seen moving their heads in order to change their visual relationship to something. In most birds the eyes are placed much nearer the sides of the head than in humans. This gives the bird a greater overall field of view, but greatly reduces its binocular vision (the area in which both eyes can see an object).