1. large nocturnal birds found in South America that feed on fruit and use echolocation to navigate in dark caves
Usage: zoological

Examples

• Oilbirds are the only nocturnal fruit-eating birds in the world.
• The cave was home to thousands of oilbirds that emerged at night to feed.
• Scientists study oilbirds to understand their unique echolocation abilities.
• Oilbirds nest in colonies deep within limestone caves.
• The loud clicking sounds of oilbirds help them navigate in complete darkness.
• Local guides warned us about the strong smell from the oilbird colony.
• Oilbirds can fly up to 75 miles from their caves to find fruit trees.