If you cant find one at Walmart, check your local Sporting Goods stores, like Bass Pro Shops or if you have a Sports Academy near by. I got several of my game cams from them. They had a huge selection. If I were to recommend one, get the Bushnell Trophy Cam. They are small, take video, easy to hide, and if you get the lithium batteries< ultimate> they last a year before needing new ones. I plan on getting a few more to hide around my property due to not so nice neighbors.
Hope you find out who or what took your chickies.
Rammy

Rammy