[evelynnn]

I was asked to take care of my cousin's cockatiel for a while for personal reasons, and it has almost been a month.
He is doing well so far in my house, but I noticed that his nostril is clogged. It seems that it has been clogged for a long time; I'm not completely sure how long, and that's why I'm concerned.
It doesn't seem to really bother the tiel' though, is there anything I can do?