If it feels any better, it’s because they’re scared to death you and your sweet pitties will eat their babies. After all, a high percentage of fledglings die in the wild every year, and they’ve invested a lot of energy into getting their babies this far. Yes they’re stupid, but think what you’d do if a bear attacked your dogs.

I’m not sure if this link will work but

https://www.wired.com/2016/06/can-teach-old-mockingbird-new-songs/