Hello - I noticed what I believe to be a purple martin in my yard. He has a very big growth underneath his right eye (dime size possibly). He is mobile on the ground and I witnessed him on the ground eating some crackers I threw out. The growth seems to make it a little difficult for him to eat though but he is managing. I have not seen him fly so I haven't determined yet if he can. Is there anything I can/should do for him? Thank you!