Completely agree with the personal favorite! #6 Kicks *ss. Love the light and contrast... Must have been a late afternoon shot!
I also like the #5 though it would have been better with the subject off centered to the right.
The other ones are okay, though i find #3 to be a little oversaturated (this is just my tast though). The light and composition is beautiful though.
The colours in #1 bather me. The birds look blue and the reflection on the water flatens the image and look very strange where the background begins.
I think that a Polarizer would have helped (if you didn't use any) and you might want to mess around with the white balance to get the birds to look a little whiter.
Oh, and you might want to straighten it out...