Cockatiel differences
I have two male cockatiels and over the course of a few months I have had them in seperate cages. A month later they are in the same cage and are doing fine but recently they have started to fight now and again. They’ve always seemed to be fine in each others presence but now if one of them gets close to the other they’ll go for the beaks or tails. Please could you give me some advice on what to do, many thanks.