Sometimes when I look at my cockatiel's nostrils they appear red from in the inside.. and sometimes they are just pink..
Is that something I should be worried about?
I have noticed he has this change of color about 2 weeks I think.. yet he seems very active and happy.. sometimes I catch him sneezing but I think its only because there are feathers flying around the air which makes him sneeze..
Try cleaning the cage with water and baking soda followed by rinse with water only. Wash the perches with water. Allow it to dry. Give your cockatiel a light mist bath with water only. He/she may have red nostrils due to excessive scratching. The redness should subside.