Hello Aiman, thanks for the comments. You're quite right about the lighting not matching. The sky was shot looking into a sunrise (from my front step), while the birds were illuminated by a late afternoon sun at my back. I liked the disposition of the birds in the tree, and substituted the dramatic sunrise sky for the anaemic original.
The detail has been lost somewhat due to digital work at quite small file sizes for the web. In the original everything is quite sharp and detailed.
I love the dramatic sky Paul, love the imposition... yet I think the choice of the lighting source for the bird, is not matching the background sky... and just another small thing... the resolution of the birds and the tree is not high... wish if there was more details... good work though