vertebrate, they are birds through much discovery, they are vertebrate.
No, flamingos are birds.
yes flamingos do migrate
flamingos has no teeth
There is no special word for a group of flamingos, they're a flock of flamingos.
yes they live with other flamingos which is called a 'couple'.
yes
There are no flamingos that are naturally green.
No, a Flamingo is a bird. Not an amphibian. You may be thinking that because they wade in water that they should be called amphibians, but that is not enough. People wade in water, but we are still mammals. See link for more.
invertebrate - has exoskeleton
yes, flamingos population is there
No Flamingos can NOT roll their tongue.