As this tripod has been mentioned in this thread I took a couple of pictures that might be of interst to those unfamiliar with the product.
This is a tripod that is superb for nature photography. The querky design hinges on the single operating lever. Unlock this and you have a wobbly set of bagbipes. The design allows the legs and head tube to be infinitely angled and with the lever locked up it is a very ridgid tripod. The bottom leg section is sealed so it can be used in the most hostile of environments.
Here is a link to Uniloc
http://www.ukray.com/uniloc/system.htm
Don