Chrysococcyx

Trivial name	Latin name
diederik cuckoo	Chrysococcyx caprius
African Emerald Cuckoo	Chrysococcyx cupreus
Klaas's Cuckoo	Chrysococcyx klaas
Little Bronze-Cuckoo	Chrysococcyx minutillus

comparison of wing and tail configuration¹

¹ According to Hartmann (2000a, 2000b and 2016)