Bat is a mammal, so it's outer covering is hair whereas bird's outer covering is feather.
Birds are covered with feathers. Bats are covered with hair.
A rich red/brown fur on the body and silver grey on the head.
what is seahorse outer-covering
The prawns outer covering is a shell
an ant's outer covering is their exoskeleton
Amphibians do not have outer covering.
Hard outer covering
The outer covering of a beetle is the exoskeleton.
The outer covering of the eyeball is cornea.
The outer hard covering of a kernel is the
Tonoplast is the outer covering of vacuole