What I never knew about cuckoos: Some cuckoos raise their own young, but others are brood parasites—birds that leave their eggs in other birds' nests, duping the hosts into rearing their offspring and freeing themselves in the process to lay more eggs instead of investing time and energy in foraging and feeding babies.

And with that, I’ll never look at a cuckoo clock without anger.

What I never knew about cuckoos: Some cuckoos raise their own young, but others are brood parasites—birds that leave their eggs in other birds' nests, duping the hosts into rearing their offspring and freeing themselves in the process to lay more eggs instead of investing time and energy in foraging and feeding babies.