pigeons in flight - make your own bird brush using this photo
To make this into a bird brush simply go FILE > NEW
Make the width 2500 pixels
Make the height 2500 pixels
COLOR MODE = GREYSCALE
Now open this vulture photo and SELECT ALL > EDIT > COPY (now minimize this photo) and finally > PASTE
LAST STEP you SELECT ALL > EDIT > DEFINE BRUSH PRESET and you are done. You can now go to your brush palate and test out your new brush.
Hope my explanation is adequate - jimmy