Generally shy and elusive, the yellow-billed cuckoo can be easily overlooked. Its calls are usually loud and often provide the best evidence to the presence of the bird. It favors eating caterpillars ...

Say 'cuckoo' and a finch-sized bird popping out of a wooden clock every hour probably comes to mind. But, at between 58 and 65 cm tall, with a piercing stare, channel-billed cuckoos are the world's ...