“The clamorous owl, that nightly hoots and wonders at our quaint spirits” Shakespeare
Take an objective look at the common barn owl. Why would an early ancestor of this bird not have the ability to glow from bioluminescence? Why could not some of its present-day varieties still have that capability? Catching insects that are attracted to a glow--that could prevent starvation when mice are scarce.
Why are the undersides of barn owls white? Why do some inhabitants of the Australian outback believe that the wandering Min Mins (at least those Min Mins that fly close to the ground like hunting barn owls) Eyewitnesses of glowing owls verify Mr. Silcock's hypothesis of bioluminescence. An objective look at the idea reveals its reasonableness.