By Johann Grobbelaar of GROB Images - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=31436161
Koekoek
Sources:
(*) https://en.wikipedia.org/wiki/Diederik_cuckoo
(*) https://ebird.org/species/didcuc1
(*) https://search.macaulaylibrary.org/catalog?taxonCode=didcuc1