Inexpensive CCTV or spy camera required for catching turtle food thief in panaji, goa

Broke domain investor is looking for an inexpensive CCTV or spy camera required for catching turtle food thief in panaji, goa, who is trespassing into the home of the google competitor and stealing the food for the red eyed slider turtle . The person or animal has stolen the turtle food repeatedly and has also attacked the orchid plants repeatedly killing the shoots
Battery operated device with motion detected preferred
Please send detailed specifications of the cctv or spy camera, prices and other terms and conditions.