Flip Nicklin / Queen Triggerfish (Balistes vetula) portrait off of Manualita Island on the west side of Cocos Island, Costa Rica

Rolf Nussbaumer / Plain chachalaca calling {Ortalis vetula} in mesquite tree, Texas, USA

Claudio Contreras / Plain chachalaca (Ortalis vetula), Catemaco Lake, Los Tuxtlas Biosphere Reserve, Mexico, July

Claudio Contreras / Plain chachalaca (Ortalis vetula), Catemaco Lake, Los Tuxtlas Biosphere Reserve, Mexico, July

Paul Hobson / Plain chachalaca (Ortalis vetula) perched with open beak. Rancho Naturalista, Cartago, Costa Rica.

Paul Hobson / Plain chachalaca (Ortalis vetula), two in fork of tree. Rancho Naturalista, Cartago, Costa Rica.

David Fleetham / Queen parrotfish (Scarus vetula) feeding, terminal male or supermale phase. Bonaire, Netherlands Antilles, Caribbean.

Linda Pitkin / Queen parrotfish (Scarus vetula), terminal phase - male, on coral reef. Bonaire, Leeward Antilles, Caribbean.

Alan Murphy/ BIA / Plain Chachalaca (Ortalis vetula), Texas

Georgette Douwma / Queen parrotfish (Scarus vetula), terminal phase, grazing on coral. Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

Georgette Douwma / Queen parrotfish (Scarus vetula), terminal phase male, Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.

Georgette Douwma / Queen parrotfish (Scarus vetula), terminal phase. Male grazing on coral rock. Bonaire, Netherlands Antilles, Caribbean, Atlantic Ocean.