I love the awkward poses and the almost-symmetry of the juveniles. The dark BG works for me but I see some problem areas along the left border and one spot in the left center. If possible, it would be good to separate the dark wingtip feathers and one foot from the BG.
Cloning in dark areas can be problematic. I have written a tutorial on a method that I find valuable:
http://www.adorama.com/alc/0008041/a...nvisible-Touch
There are a number of tutorials on various aspects of the digital darkroom on my web site.