This is a very short question but I cant find anything online about this. My grandma thinks my bird has a problem with her leg, she thinks she has a bump on the (knee? back knee? idk what it is) but I think shes fine. She thinks that she stands on one leg because she has a bad foot, but I already know that birds stand on one leg to rest or to get heat. To make sure, I looked up "bird foot problems" and I can't find any bird foot problem online that looks like her "problem" I doubt she even has a problem with her foot and my grandma is overreacting. I gave those details to get better answers but my main question is: is it normal for a bird to always stand on one specific leg? Thats one of the reasons my grandma thinks my bird has a problem with her foot, even though I doubt it. Answers please.