Yes. Peacocks, like all birds, are vertebrates. They have a backbone and an internal skeleton, which are the characteristics shared by vertebrates.
Penguins belong to a vertebrate group called aves.
fish
They are amphibians
reptiles
bird
reptile
reptiles
The apes
The vertebrate group in which humans belong to is the mammal group.Humans belong to the Mammal group.
Sharks belong to the vertebrate group known as Fish. Specifically, they belong to the vertebrate group known as Chondrichthyes - all sharks and rays - which have skeletons of cartilage rather than bone.
chordata
Reptiles