Kukačky (English: The Swap) is a Czech family comedy-drama series developed and produced by Dramedy Productions for Czech Television. It began broadcasting on 8 January 2021 on ČT1. It focuses on Jakub and Tomáš, children who got swapped in hospital.The last episode of the first season premiered on 2 April 2021. Season 1 was very successful with average rating 1.7 million viewers over the age of 15 with a share of 36.50%.

In March 2021, ČT program director Milan Fridrich confirmed the planned preparations for the continuation of the series; in early July 2022, at the Karlovy Vary Film Festival, ČT announced that filming of the second season was already underway (again under the direction of Biser A. Arichtev) and revealed that by new characters will be added to the plot while Holec and Kadlec families will live opposite each other. The second series of Cuckoos with thirteen parts, presented on 11 January 2023 in the Municipal Library of Prague, was broadcast by Czech Television on 20 January of the same year.