Are all tinc calls the same?

Dumb question, but just to be sure. If my azureus were to hear the call of a cobalt, would they recognize it as a cobalt or would they think it's another azureus? Are the calls exactly the same or are there differences? I'm fairly certain they're the same but just want to be sure.

The reason I ask is that I was playing calls this morning via YouTube and wasn't sure if playing other morphs calls would be worthwhile or not.