Hi all! I'm new to posting here, however, we've gleaned valuable information from many of you for quite some time (for that, thank you). The pic is a new growth found on one of our chicken's feet. She is an Ameraucana and just over four years old; she went went thru a very heavy molt. Suggestions for what it might be and how to treat? Thought maybe bumble foot but it's on top. Thanks all!