Cuculidae

• Cuckoos
• Roadrunners

• Science: Biology: Plants and Animals: Animalia: Chordata: Aves: Cuculiformes 

• Groove-billed Ani (Crotophaga sulcirostris)  - US Geological Survey reviews size, appearance, social structure, habitat, life history, map, song, and taxonomy.
• USGS: Smooth-billed Ani (Crotophaga ani)  - Discusses plumage, characteristics, range, similar species, migration, diet, clutch size, and glossary.
• WhatBird.com: Groove-billed Ani (Crotophaga sulcirostris)  - Relates physical appearance, locations, sound clip, interesting facts, range map, characteristics, behavior, and drawing.
• WhatBird.com: Smooth-billed Ani (Crotophaga ani)  - Includes overview, range map, pictures, physical characteristics, breeding, nesting, feeding, and similar species.