1. a large nocturnal bird of South America that feeds on fruit and nests in caves

Examples

• The oilbird is the only nocturnal fruit-eating bird in the world.
• Oilbirds use echolocation to navigate in dark caves.
• The young oilbird chicks are extremely fat and were once harvested for oil.
• Scientists studied the oilbird colony deep in the Venezuelan cave.
• The oilbird’s scientific name is Steatornis caripensis.
• Local guides led us to see the oilbirds roosting in the limestone cavern.