Thank you, for taking a closer look!
What you are seeing is the result of far too many years perching on dowels.
Please visit the Amazon Forum as part of Parrot Forums. When you open the Amazon Forum, you will find at the very top, a Sticky Thread highlighted in light blue titled: I Love Amazons - ... That huge Thread contains near thirty writings regarding the caring and love of Parrots.
Please read at least: 4. Getting to the Foot of the Problem Page 3
This segment will provide information as to why and what is needed to help your Parrot. Within the couple of Posts that follow this segment shows a Blue and Gold on a proper sized natural wood perch. It is important to provide a cross-section of natural wood (branches) perches.
Within a few months you will begin to see improvements in the condition of your Mac's pads. Sadly, not all will recover, but they will not get any worst.
Enjoy the reading!