Sammy sits on my shoulder momentarily

This morning, after Sammy had stepped up to the perch and had flied across the room to sit on top of the cages, I wax trying to coax her onto my finger.  She flew off and landed on the floor.  Still not wanting to get on my finger I offered her the hand-held perch.  She stepped up onto it and I put the perch just below  my shoulder, and she stepped up onto my shoulder.  She stood there, with her wings half-way open for approximately 15 seconds, before flying off to the top of the cages across the room.

Today the cockatiels are also getting the Kaytee Munchables Shred-a-Box.  I've put one in each of the floor of each of the bird's cages.  They are small cardboard boxes with honey seed treats inside.