Ive been raising a little northern mockingbird for a few weeks now. Hes been eating apples and figs, worms, and wet cat food. And hes been doing great but all of a sudden last night 2 little white lumps showed up under his neck and one on his back. Do you have any ideas as to why this would happened? There tiny now and I just dont want them to increase in size at all. get back to me when you can. Thanks.