This is a terrible situation and I hope you can figure it out. I would suggest borrowing a video camera from a friend if you can. Or you could have a friend come over to stay for the night and then you can leave to go to work but tell the friend the stay in the house and pretend not to be there and watch the coop discretely and/or video tape it.
I searched online for some security cameras and I founds some for as low as $60. You might beable to find cheaper ones.
I searched online for some security cameras and I founds some for as low as $60. You might beable to find cheaper ones.