A bird’s entire skeletal system can account for less than 5% of its total body weight. Yet its bones are strong and flexible enough to withstand the constant stress of flapping, take-offs and landings. In this sequence from FLIGHT: THE GENIUS OF BIRDS you’ll observe the elaborate infrastructure of girders and struts that support the interior of the largest bones in a pelican’s wings.
“This is a remarkable balance that the bird has to maintain between structural strength of the bone, and the needs for flight. In order to fly, a bird must be strong enough to free its body from the bonds of gravity, and light enough to remain suspended in the air. Its skeletal system is crucial to success.
This adult pelican weighs more than 20 pounds, and has the strength to fly hundreds of miles before landing. Yet, its entire skeleton weighs less than 30 ounces. How? The majority of the bird’s bones are hollow, and reinforced by an internal network of girders and struts.
The result is a light but durable framework, able to withstand the constant stress of flapping, take-offs, and landings.”
Learn more about the miracle of a bird’s existence by viewing the full documentary. Get your copy from the Creation Superstore HERE!