headcanon book

Countryaliens

As humans has countryhumans, so the aliens have countryaliens

Also, their faces would be their flags just as countryhumans are. 

Countries and Planets that contain a significant amount of more than one species can take the form of either species, can change between them, or become a mix of those species if they so wish

As the mouth of different species can be different, it may be impossible for some to make certain sounds, so because I dislike having a language barrier, each species will have their own language that their personifications can always speak, and when one personification of a species talks to another of a different, they would have a different language, but are somehow able to understand each other

Some species might not be able to communicate via sound like humans, they would 'hear' us in their heads like telepathy and we would be able to sense their form of communication by whatever way they communicate-

And yes, just as some countryhumans can have wings or other animal parts, countryaliens can have parts of animals from their own homes, but this is rare due to having space travel and other reasons