Swollen and orange leg??

So today I noticed that my boy Gypsy’s leg is swollen and an orange reddish color at the joint? His other leg is fine and I didn’t notice it the last time I was with him a couple days ago on Thursday. I didn’t hang out with him yesterday (due to my mini-trip) but the nearest vet that actually treats birds is a very long time away from where I live. Anyone had something similar that they could give advice on?