The Oilbird is a unique nocturnal bird from South America, it lives in caves, uses sonar to navigate, has eyes like a deep-sea fish, hovers in place and has a phenomenon since of smell. These fruit eating birds navigate in total darkness by emitting clicking calls in rapid succession and listening for their return echoes. Unlike bats, which emit ultrasonic clicks that we cannot hear, oilbirds’ clicks are audible, and they hover in place to feed. The oilbirds retinal rods are stacked in three tiers, an arrangement seen only in deep-sea fish that lives in total darkness. The density of this bird’s rods is 1 million rods per square millimetre. This, in combination with its oversized pupils, gives the oilbirds the greatest light-gathering capacity of any land animal!
As with the duck-billed platypus, the oilbird has a hodgepodge of features from all over the animal kingdom with no clear evolutionary ancestry. This makes perfect sense if the entire animal kingdom has a common Designer - God - but defies any naturalistic evolutionary explanation.
Description from Bruce Malone.