I think Collies all have similar barks. What I mean is, I can tell a Collie bark from another breed barking, even if I don't own the dog...

I have a lot of people, when they are coming to see the dogs.. or look at a puppy I may have available say they can tell Collies live here because they recognize the collie bark as well....

However all my dogs have their own barks. If they are outside barking, or inside the house barking in another room of the house, I know their barks and can tell if it's Paris or Kelsey or Sage or Tyler etc..etc..etc just by their barks... some are mouthier than others....

If I have everyone outside and Paris is barking like crazy but no one else is barking.... it's more than likely nothing because Paris just likes to hear herself bark lol On the other hand Tyler is a quieter boy so if he is barking there is probably a reason...