Question 1

Does Shifters live in groups? Do they have territories?

Accepted Answer

Shifters, like humans, are gregarious, so they tend to live in small groups.
They live in Clans, Packs or Flocks, and when they group up they establish a territory that they check and defend (some more than others)
Some of them instead choose to not group up and live as a loner.

Question 2

Clans, Packs and Flocks, what are those?"

Accepted Answer

A Clan is a group of mixed (so with diffrent animal forms) Shifters that decide to live together. A Clan is often lead by a dominant alpha.

A Pack is a group of canine shifter that decided to live together. Packs often build up hunting teams to be more succesful at hunting.
 
A Flock is a group of shifter with bird form. They can be a Migratory Flock (so a group that stick together but doesn't have a territory) or a Stationary Flock (so a group that find a territory and stick together there)

Question 3

Is there a map of the whole thing?

Accepted Answer

Yes there is. We are crazy over this thing. bye
 
Map with the list of biomes and name of the main places:
https://static.wixstatic.com/media/undefined
 Map with the main territory of Clans/Packs/Flocks: Past version
https://static.wixstatic.com/media/undefined
Map with the main territory of Clans/Packs/Flocks: Present version
https://static.wixstatic.com/media/undefined

Question 4

What are loners?

Accepted Answer

Loners are those Shifters that end up living by themselves. Life can be more though for them because they doesn't have the support of a group to hunt and they also lack of territory where to etsablish themselves, so they do not have a home to came back. 
Loners often sleep outside in animal form, so it's usual for them to live in a more "animal way" (for example, a rabbit shapeshifter would sleep in animal form in its bed if it was safe in a territory, but if it's a loner it might just dig a hole where to spend the night)

Question 5

What are travelers?

Accepted Answer

Travelers, as the name might suggest, are Shifters that live to travel. They group up in tiny groups or couples and they bounce from a territory to another.
They're the adventurer of this world! :D

Archive: Overwatch Shapeshifter AU

[Gallery with a visual reference of all the territories and the housing