I don't know of any that will take a picture every 5-10 seconds that operate after sundown. The black IR cameras are the way to go - no red glow from the IR at night. If you can swing it, the ones that send the pictures to your computer are the best. If the camera gets stolen, you still have the pictures. Although I don't know how quickly they send a picture once it's been taken.

Hiding them in birdhouses, etc., is the best.

Unfortunately, they have to be close. I'd say 30' is about max range to get a picture, 20' or less to get a really clear picture, especially at night. The pictures get grainier at night.

www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).