we were using, the birds were fed pellets and fruit in weighed amounts but they had to earn their treats which could be sunflowers seeds or peanuts. One of the tricks was to make the nut pieces tiny so you could ask the bird for several repetitions before it became satiated.
Betsey Positive reinforcement principles are used on every occasion. Macaws don’t enjoy having their long tails knocked against any surface. When two macaws share a flight and we are going to work