[JMitchell]

Thanks everyone! Yes matt! Go for it, a great lens, but make sure you get the APO version. Great price, and very versatile, added macro function is also useful.
Stepheno: yes I thought about that, and agree I am not so sure about the crop on the jay, but maybe on the tit, I thought it looked a little lost in its background.
Thanks Pat, yes it is a very nice tree indeed, I haven't really spent much time looking at it, but now that I have, I see how many birds and things come into my garden!