Hi and welcome. I just recently changed over to a Nikon system and like it very much, definitely a change from my previous Sony system. I do some wildlife photography as well, still with the Sony system using a Tamron 200-500mm on a Sony A700. Definitely learning a lot about birds,etc. Will be looking forward to seeing some of your work and advice. :-)
Congratulations on your upgrade. I've been meaning to post here but life has had other ideas lately. As soon as I can find some time I will be getting to it!
It's still in under construction but my website does have a little bit of my work, it's not organized tho.
Roblonsberryphotography.com
Also, look me up on Flickr.
If you're stuck however send me a private message or email and I'll do my best to get back to you.
Rob