Motion sensor

I have a
Pentax *ist D
and I was wondering if it has a motion sensor because I have set up a bird feeder and want the camera to take a picture whenever it senses a motion.

Help?

I don't think that any DSLR has a motion sensor. The higher Nikon DSLR's try to track subject movement by observing the changes in colour on the 1005-zone exposure sensor in order to know which autofocus point to use, but that doesn't trigger an exposure

I don't think that any point-and-shoots sense motion. I noticed this weekend that my Sony Smartphone does face recognition and chooses that zone to focus on. I believe that some point-and-shoots are triggered off my the subject smiling.

You will have to purchase a wild life camera motion senor, or have one made for you or make one yourself.

You could try something like the Zigview. I don't know how well they work or if they will work on your particular camera, but they have a motion sensor built into them.

http://www.argraph.com/Zigview/page1/Zigview_page1.htm

There are other motion sensor triggers on the market, but they aren't cheap.

A much more inexpensive option would be a trail camera that you can pick up at just about any decent department or sporting good store.

I had a 35mm trail camera given to me a few months ago. My plan is to some day try to take it apart and build a motion trigger I can use on a DSLR but who knows if I will ever get to it...