Wildlife cameras often use infrared that is either low glow or no glow. This means perceptible light is not emitted like it is on a conventional camera. These use a bright white flash.
Because of the infrared, you get a black and white image at night. The key benefit is that the wildlife you’re trying to picture is not disturbed by the bright flashing.
Furthermore, the position of the camera is not revealed to potential thieves. You might even use the camera itself for covert security purposes.