Bernard Castelein / Guira cuckoo (Guira guira) perched in tree, St Cruz, Bolivia

Bernard Castelein / Guira cuckoo (Guira guira) group of four, between Samaipata and St Cruz, Bolivia

Bernard Castelein / Guira cuckoo (Guira guira) group of four, between Samaipata and St Cruz, Bolivia

Thomas Marent / Smooth-billed Ani (Crotophaga ani), Mamiraua Reserve, Amazon, Brazil

Rolf Nussbaumer / Groove-billed ani (Crotophaga sulcirostris), adult drinking, Rio Grande Valley, South Texas, Texas, USA. June

Murray Cooper / Smooth-billed Ani (Crotophaga ani) feeding on flowers, Ecuador

Murray Cooper / Smooth-billed Ani (Crotophaga ani), Ecuador

Nate Chappell/ BIA / Groove-billed Ani (Crotophaga sulcirostris) at pond, Texas

Gabriel Rojo / Guira cuckoo (Guira guira) La Pampa, Argentina

Nate Chappell/ BIA / Groove-billed Ani (Crotophaga sulcirostris), Texas

David Williams/ BIA / Smooth-billed Ani (Crotophaga ani), Cuba

Gerrit Vyn / Groove-billed ani (Crotophaga sulcirostris) perched, Yucatan, Mexico. August.