Lonely?

My chin makes this noise every morning when he's supposed to be asleep, I don't know if he does it while sleeping or if he's awake

http://ift.tt/1BgK6Fy



I read that this is the alarm call? but the strange this is that he makes this sound either in the morning while he's sleeping or in the evening almost night, when he's alone in the room and everything is very quiet.



I thought he might feel lonely because whenever he starts making that sound, I instantly call him or make a sound myself and he stops and doesn't do it again until the next day. Could that be the reason or is he alarmed by something?