The colours in the first pic are beautiful, the grass is a little intrusive at the bottom of the pic, although I understand you probably didn't have long before he ran away! The second pic is lovely! What a great pose for you!
Nice sharp pics and nice colours, but try not to "crop" off their tails. I know birds are "fun" to photograph, but the fact that they can be "jumpy" as you say is really part of the challenge in getting good images. If you are really interested in bird photography, check out a chap by the name of Art Morris for his bird photography - Arthur Morris/BIRDS AS ART .