I went to the pet store earlier to look at their birds. Usually their birds look alright, there are things i wish they would do better but for a pet store they do good. Toay though I was very concerened. They had one cage with two lutino cockatiels in it. They were in the very top cage, almost out of view. when i looked into the cage both of them had very stringy tail feathers. Their tailfeathers were in strands. Otherwise they looked OK but I'm not sure because i couldnt get a good look. Is this something serious??