Hi casil, Bambi and kat. Thanks, glad you enjoyed this pic. This photo is actually a composite. I took a FREE texture from Flickr's member SkeletalMess and combined it or layered it with a shot of starlings that I captured when they were directly over head. I played with the opacity of the layers to achieve the final result. Check out the FREE textures below

Free Textures Vol. 1 - a set on Flickr