With the Egret channel selected, click any eye icon (
) appearing next to the other channels to hide all channels except the Egret channel (if necessary).
When only the Egret channel has an eye icon, the image window displays a black-and-white mask of the egret selection. (If you left all of the channels selected, the colored egret image would appear with a red overlay.)
Look for any black or gray flecks within the body of the egret. You’ll erase them by painting with white to increase the selected area. Remember these guidelines on editing a channel with a painting or editing tool:
Painting with white erases the mask and increases the selected area.
Painting with black adds to the mask and decreases the selected area.
Painting with gray values adds to or subtracts from the mask in varying opacity, in proportion to the level of gray used to paint. For example, if you paint with a medium gray value, when you use the mask as a selection the pixels will be 50% selected. If you paint with a dark gray and then use the mask as a selection, the pixels will be less than 50% selected (depending on the gray value you choose). And, if you paint with a light gray and then use the mask as a selection, the pixels will be more than 50% selected.