hi all, we have a small back yard flock of eight hend and four entertaining guineas. out flock was purchased through a farmers market, and as we would discover, the age and health of the birds when we recived them was questionable. they are all happy healthy ladies now, and it has been a great learning experiance. THAT having been said, mu husband and i just noticed a large ball at the center of one of my RR's feet. it hurts her to walk, but is not discolored in any way and she is in otherwise beautiful condition. my first thought was sist..then i thought...tumor?? anyone have this? treatments??? many thanks in advance!