18 month old RIR. Has had this for a while. I've bathed her but it looks bad again in just a couple of days. Smells bad too. I'm wondering if it's vent gleet. She acts fine, eats good and maintains her place near the top of the pecking order. Eyes are bright and she's as alert as the other birds. She has lost some feathers around her crop. Notice how visable it is in the one picture. Any thoughts? Unless someone thinks differently, I'll try some of the vent gleet treatment advice from other threads. Thanks!