Scarlet macaws are also able to break open the toughest nuts. Parrots have more movement in their beaks than do other birds, which allows for a more powerful bill. Ara macao occasionally consume clay found on the banks of rivers. Reproduction Breeding in Ara macao occurs about every one to two years. The clutch size is 2 to 4 white, rounded eggs with an incubation period of 24 to 25 days.
Females mainly incubate the eggs.
After hatching, the young may stay with their parents for one to two years. Behavior Ara macao gather in flocks to sleep at night, but maintain a monogamous pair bond for life. Macaws are mostly found in pairs either in their nests or flying together. Mates may show affection by licking each other's faces. Nests are made in hollowed areas in trees, usually in the upper canopy of rainforests.