Kenai has occasionally been making a call that I have yet to identify. I listened to all the calls/sounds on that one site, and it doesn't really sound much like any of them. It starts with a single kack followed by what I can only describe as a slow-motion airy squeaky toy type noise. He's not wheezy in any other way, so I'm pretty sure it's not a respiratory issue or anything. Sometimes it's just one, other times its a sequence of up to 5 or 6 "squeaky toy" calls. Most of the time I find him hiding under his chin spin when he does it, so I'm guessing it's a type of warning call? One time was cute though... I was sitting in front of his cage with the door open giving him some scritches and attention, and Scott comes in and sits down on the bed (Kenai is quarantined in the bedroom) and Kenai starts making the calls at him... silly boy.