On mature Cooper's- perched

Mature Cooper's Hawks: Do not have to have a dark skull cap. Do not have to have tawny cheeks or a flat head- or have the eye appear to be pushed toward the forward area of the head. Mature Cooper's can have very pale pink or orange vermiculation on the chest, which may be difficult to " pick up" at close range- naked eye. Every item above does not represent the norm. Mature Cooper's can have a rounded head. Cooper's generally, have a very long tail. They can hide their thick, white terminal band by controlling the tail feathers, while perched. The tail-tip will be tapered, showing just a hint of white. But, if the hawk leaves its perch, ( I followed this bird one quarter mile to its next perch), you will notice that the hawk has a thick, white terminal band on a rounded tail-tip. Or, you might observe the terminal band as the hawk leaves its perch.