Birds from same source as before but more of them, 2 layers of them at different transformations. usm, brightness/contrast, hue/saturation, duplicate layer, faded old photo layer style, blend option overlay 50 percent,select block faces, painted yellow at 25 percent opacity, duplicate layer, blend option screen 50 percent, brightness/conrast, order etc.
In this one the birds don't look as realistically part of the scene as in the others due to the size of the ones in the lower right but that could be because I saw them larger in the first two.