Canon EOS 5DMIII, 5DMII, 40D, Powershot S3IS, D10, G12 600 mm L f4 IS, 300 mm L f4 IS, Sigma 70-300mm APO DG, EFS 18-55 IS, EF 16-35mm 2.8 II, 1.4x Kenko Teleplus Pro, 2x Kenko Teleplus MC7, 1.4x Sigma TC Manfrotto 055PROB, 393 Gimbal Head, Canon Speedlite580EX II
Hi John. Sorry for the late reply I have not been very active in the forum lately.
Regarding your question, if it is bird watching just get a pair of binoculars. Maybe you have a friend or relative who has a pair they are not using.
For photography a canon 400mm f5.6 is a good lens and is very popular with the people in the forum, some people prefer the canon 100-400 because it has IS. If you are using Nikon your choices are less, it is either a Sigma zoom or the Nikon 80-400.
Invest in a good lens first, instead of an expensive body.
I read your blog. I don't want to sound preachy but don't buy wild birds like the blue naped Parrot. In doing so you would be supporting the illegal hunting, trapping and trading of wild birds. Our forum is about taking photos of birds in their natural habitat. Personally, I think birds are best appreciated flying free in their natural habitat so thet can be enjoyed by everyone. If people keep buying birds the trappers will continue getting wild birds and their chicks.