sleeping canary makes noises

by Gianna
(New York, NY, USA)

I'm a new bird owner. Lately, when my canary is sleeping, he/she makes little clucking/kissing noises. During the day, he/she seems fine, flying around, tweeting, eating a lot, hopping and all. Sometimes the canary makes clicking noises, but I believe this is with the beak (and often near the cuttlebone).

I have no draft in my room, don't have odd smells that I know of, and don't wear fragrances. It has one eye (the other one got pecked out?) Thanks for any input!