I see no response. Cover that is effective is not always pleasing to the eye. Trees with open under-story obscure view of soaring predators, but most I deal with will be perched in the canopy or come in a low angle from just above ground level. If the hawk can fly through, then cover will not...
Poor cover, excellent forage
Good forage, poor cover
Excellent forage, poor cover, lots of Red Fox
Excellent cover and forage
Good cover to right
Poor cover, excellent forage
Background good, foreground good forage
Hawks not moving much yet. You likely are dealing with residents. Can you show a picture of landscape the chickens forage?
I have very little hawk issues, but do have lots of hawks.....