Parrot Tulips have petals that are feathered, curled, twisted, or waved in mostly bright colors. They are mutations developed from late-flowering tulips, and from tulips in the Triumph class. As a result, some are late spring flowering, and some are mid-spring flowering. They also vary in height from 12 – 28″ (30 – 70 cm), averageing about 16″ (40 cm) . For horitcultural classification, these are Division 10 tulips.