My African Grey doesn't pluck but he does like a particular type of toy
that may help keep his mind off the dreaded plucking possibility. Its a
2inch diameter wheel of wood with holes drilled around the circumference.
Through the holes are threaded 8inch laces of leather. Originally the
laces had plastic beads on them but Puck popped those off within a few
hours. Now the toy is just the leather laces*** from the wood, but
Puck sits next to it during the day and runs his beak down the laces
over and over again. His expression reminds me of a small child sucking
its thumb, pure absorbed contentment (yes, I let my children suck their
thumbs, they are well adjusted college students and their teeth didn't
need any more orthodontia than their pacifier sucking friends).
But, other things to consider, Puck is not an only bird, his cage sits
in front of a window through which he can see a busy street, and twice a
day he is taken to his*** rope from which he swings by his feet,
upside-down, and flaps his wings in pretend flight . Great exercise.