Image copyright

I've been trying to find the community rules related to copyright of my images. Where can I find this?

In particular, I want to know what the RSPB can do with any images that I upload to the forums or anywhere else on the site.

As my images are also occasionally uploaded by an RSPB staff member to a reserve blog, I want to know the copyright and use status of those images, too.

My wildlife sounds and images at http://www.jerryhoare.net