[Opinated]

I plan to buy an automatic camera to photograph varmits and game as soon as possible. I need one that will photograph both day and night with non-visible flash and battery life of at least one week. Need for the camera to retain the image even if the battery goes dead. Must be weatherproof. Color photos are desirable but not absolutely necessary. Cost will be a consideration, but not necessarily the most important factor.
Your suggestions based on experience are requested and appreciated.

This will be mounted on a tree.