What baby bird is black with a white belly and orange beak?

As you may know this type of bird is very beautiful to see. When a baby bird is born they have distinctive colors that will stay with them throughout their life. Like the flamingo he has always been pink. When a flamingo is born people think that it can be white or have a slight pink tint to it. Usually birds with a white belly are very good at disguising themself in the winter time they usually stay in the coldest places and do not migrate. Birds however with an orange beak are very bad at disguising themselves and migrate to warm places. In conclusion this bird that you speak of does not exsist.