What is the best way to document the progress of a construction site?

I would like to document the construction of a house from three points of view. In my mind, the perfect solution would be a battery operated digital camera that is made to be left outdoors. I would be able to mount it top a post or tree, then set a timer so that the camera would take a picture at a designated time each day in full color at a somewhat decent resolution. I would then be able to pop out a media card or something to download the pics from time to time. Does a camera like this exist? I found something similar that was motion activated, but the images are black and white. Please help!!!!

atlanta construction staffing