Clamator glandarius:

Description:
Group: Cuckoos

English: Great Spotted Cuckoo
German: Häherkuckuck
French: Coucou-geai
Spanish: Críalo
Dutch: Kuifkoekoek

Cuculus canorus:

Description:
Group: Cuckoos

English: Common Cuckoo
German: Kuckuck
French: Coucou gris
Spanish: Cuco
Dutch: Koekoek