CUCKOO

Foolish

• Ani

• Bananas

• Beaked timekeeper

• Bird in a clock

• Bird in a Kesey title

• Bird of the hour?

• Bird that pops out of a clock

• Buggy

• Feature of some clocks

• It'll pop out on the hour

• Long-tailed bird

• Swiss ticker

• Timely bird

• A man who is a stupid fool

• Any of numerous European and North American birds having pointed wings and a long tail