Regarding BirdCam vs. Deer Cams...
http://www.wingscapes.com/FAQs/#faq2

2. What is the difference between a BirdCam and a Game Camera (or Trail Camera)?
Motion-activated cameras have been used for years by hunters to monitor wildlife. Visit a hunting retailer and you will find many brands and models of these "Game" or "Trail" Cameras. THESE WILL NOT WORK WITH WILD BIRDS.

Game Cameras are excellent at what are designed to do - capture large animals like deer. However, they will NOT work with wild birds for several reasons. First, these cameras are calibrated to disregard movement of small animals like squirrels and birds. Second, they are designed to capture a larger field of view and photograph larger subjects. Third, they are often designed for low-light photography in deep, shaded woods and at night. Finally, there are numerous smaller design issues that prevent these cameras from being effective with wild birds.

In contrast, the BirdCam was designed to detect small animals such as birds while disregarding feeder movement. The lens system and camera software are calibrated for daylight photography of colorful, small subjects at close range.

The BirdCam will work with larger animals. However, if you are looking for a specialized system for larger animals, we recommend Moultrie Game Cameras (a 'sister' company).