I'm not sure if youre fishing for compliments, or what, but I'll give you my opinion.
I believe the shots all area very nice. They are well exposed, the compositions are balanced and the subjects are interesting.
My opiinion of a few of the shots are related to my style, not to your work. I prefer, in my wildlife, somthing different, or unique. Now, your stuff, as I said is photographicaly top notch for sure, it could be published in just about any bird book, but to me the shots lack interaction or intamacy, they are more documentary style. And there's nothing wrong with that!!!
I like to shoot wildlife in a way that gives the viewer a window into their lives. Or, a shot should be capivating, like the 3rd and 4th shots.
Technically, they are perfect. I would just work on getting to know the birds habbits better and getting those special, shots that only can be taken by people who really understand the the birds and their uniqe lives.
At the end of the day, those shots are great and you should be proud of them. . . Just a little more effort into capturing those special moments, and you really will have somthing. . .