Birds are neither mammals, nor reptiles. They are an entirely different branch of evolution. However, they are more closesly related to reptiles, which they descended from. Their evolution from reptiles caused them to resemble mammals.
It is a bird, a kind of heron.
a Snowy Egret is a bird.
Is a crab a reptile or a mammal
is a caribou a reptile or a mammal
mammal
a snake is a reptile a bat is a mammal
Reptile
Reptile
It is a bird, neither mammal or reptile.
Mammal.
Mammal
A leopard is a mammal.