I wouldn't chip my bird, if they are the same ones they put in dogs and cats, the are big for a bird IMO. Lots of people do it though, but there are tons more that wouldn't even think to scan a bird they find. I have heard about them causing cancer because it's a foreign body too. But the argument back was that dogs and cats don't usually live long enough for it to be a big deal. (Then how do they know!) I haven't heard much about chips in birds. My boxer I adopted has a chip, and I do know for a fact that chips can migrate in dogs and cats. That being said, I wouldn't have his removed, unless he starts having issues with it. What do they say... Why fix something that isn't broke? But talk to your vet, maybe it's an easy procedure?