How often do common cuckoos lay eggs?

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Cuculiform Body plans of representative Cuculiformes.

It is well established that the common cuckoo lays its eggs at 48-hour intervals.1

As a brood parasite, the female cuckoo must locate a new host nest for each of the 15 to 20 eggs she produces during the breeding season. To ensure the success of her offspring, she monitors potential host nests and deposits a single egg in each, typically visiting when the host is away from the nest.1