I like the color tones in this one best. You did a good job making the birds blend into the picture except for maybe that first foreground one - he seems a little light against that darker section of water.
really love the colours in this process instead of the more bluish/purple tone in no.2 ..
but really really love the birds in no.4 and how you've put more in and a bit further away ..
its great wot you've done with the two photographs .. :)