Absolutely!!!
Slifer liked her back petted and sometimes her tummy.
Penny liked just at the base of her skull scritched and down her back.
Obelisk, when she feels like it, likes to have the front of her neck rubbed and sometimes her wattles. If you pat her, she may do the Atomic Squat.
I noticed that ALL of them liked to be "brushed" or preened when their feathers were growing in especially in hard to reach spots.