Welcome! I would definitely recommend separate cages for your two QPs. In time, the two parrots may get along better, but for now, it's best to keep them apart. There may be jealousy on the part of Quaker #1, and he may resent the intrusion of a second Quaker into "his" home. Your first QP should be treated with "first parrot" protocol-- first to be greeted in the morning, first to be fed, first to get one-on-one attention, but last to be put to bed at night. That usually makes a difference in #1 Parrot's attitude toward Parrot #2.