- ADW: Yellow-billed Cuckoo (Coccyzus americanus)
- Gives regions, habitat, physical description, mating, parenting, lifespan, communication, food habits, predation, and conservation.
- Animal Diversity: Common Cuckoo (Cuculus canorus)
- Highlights distribution, habitat, physical features, diet, reproduction, behavior, economic importance, and conservation.
- ARKive.org: Cuckoo (Cuculus canorus)
- Explores status, description, range, habitat, biology, threats, and conservation.
- Audubon.org: The Black-billed Cuckoo
- Explains migration, flight, diet, nest, range, habitat, and physical description. Includes sketch and related species.
- Bird Web: Yellow-billed Cuckoo
- Presents general description, habitat, behavior, diet, nesting, migration, and conservation status.
- Black-billed Cuckoo (Coccyzus erythropthalmus)
- Seattle Audubon Society covers appearance, habitat, distribution map, breeding range, and sightings.
- Black-billed Cuckoo (Coccyzus erythropthalmus)
- Shows identification tips, life history, population map, ITIS taxonomy, and glossary.
- Black-billed Cuckoo (Coccyzus erythropthalmus)
- Field guide contains identification tips, species overview, range, habitat, feeding, nesting, and portrait.
- Mangrove Cuckoo (Coccyzus minor)
- What Bird furnishes species overview, identification tips, behavior details, and portrait.
- Striped Cuckoo (Tapera naevia)
- Information covers geographic range, habitat, diet and feeding habits, reproduction, conservation status, behavior, and predation.
- USGS: Mangrove Cuckoo (Coccyzus minor)
- Discusses physical characteristics, similar birds, life history, classification, and glossary. From the United States Geological Survey.
- WhatBird.com: Oriental Cuckoo (Cuculus saturatus)
- Presents overview, range and habitat, songs and calls, interesting facts, related birds, identification, behavior, and portrait.
- The Yellow-billed Cuckoo
- Audubon drawing accompanies description of flight, migration, sounds, behavior, range, habitat, nest, and reproduction.
- Yellow-billed Cuckoo (Coccyzus americanus)
- Features description, adult and juvenile appearance, similar species, map of population, egg, song, and classification.
- Yellow-billed Cuckoo (Coccyzus americanus)
- Provides overview, range and habitat, sound clip, interesting facts, related birds, identification tips, behavior, and illustration.
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