I had a few crazy days when I was away from home a lot, my husband was watching the birds.
Trillie has a wound on his cere, basically on one of his nostrils, I assume he ran into something while flying (he injures that area pretty often but it always heals by itself)
It looks much better today, almost healed, he eats all right, but I noticed yesterday and today that he is closing only one if his eyes while sitting quietly. No, he is not more quiet than usually, he is not a crazy bird at all, he likes to sit doing nothing a lot. His behavior is as usual, except for closing one eye only.
IS it a sign of a serious illness?

It's pretty common for birds to relax with one eye closed. Everything is probably OK if he can open and close both eyes when he wants to. But if one eye won't open or won't close, he might have an injury in that area.

thank you Carolyn.
I thought his wound was healing, I was spraying them with water today (they love it and we haven't done quite awhile). I sprayed Trillie too, and then I saw that his wound didn't look so good. He sits like he doesn't feel very well.
What over the counter medicine can I try? Neosporin creme?

You could use a very small amount of Neosporin, but not so much that he could rub it off on his feathers and get them all gunky. Does the wound look OK when it's dry or did it just look bad when it was wet?

It's possible that he has some bruises or other injuries in addition to the cere injury, which might be painful.

I think it looked bad because it got all wet. It looks better again but I am keeping an eye on Trillie

If it looks OK then it's best not to put anything on it. I hope he feels better soon!

thanks!
I think his behavior is pretty normal: preening, yelling for Cuddles, fighting for sleeping spot before bed time, etc. I think he is healing all right.