Texaco
The bird with a blue back and a white belly is likely a blue jay.
The answer to the riddle "What is 100 feet in the air and lies with its back on the ground" is a dead bird. The bird is 100 feet high in the air when it falls from that height, but once it has fallen, it lies on the ground with its back facing down.
Sounds like a killdeer.
Quails nest on the ground and a quail's nest may contain up to 28 white, speckled eggs.
Ostrich
Sounds like a humming bird.
ostrich
African Grey
The Bald Egele
Black eagle
Black eagle
No, a whiteback is not a bird. Whiteback is a term that may refer to a specific bird species or to a physical characteristic (such as a white patch on the back of an animal), but it is not a bird species itself.