I know what you mean, we've already had to extract a cactus needle from the foot of one of our pullets, it snuck in and I never even noticed her limping or anything. We found it on a routine foot inspection. I do wonder about the feathered feet too. I'd love to have some of the more exotic birds, but I want them to be safe and happy too. I'll go over to the AZ thread and ask around, thanks!