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Bioluminescent Barn Owls

The other day I received a package from Australia, from Fred Silcock, who is probably the world’s leading expert on intrinsic bioluminescence in Barn Owls. One item in the package was a copy of an article from BBC Wildlife. But how do barn owls relate to reports of a live pterosaur? It’s the bioluminescence, or at least the hypothesis that both Tyto Alba and modern pterosaurs glow at night, especially when they fly.

BBC Wildlife Article by Richard Mabey (December, 2009, issue)

[The will-o’-the-wisp] was once frequently seen in marshy areas, and I’ve found records for the Waveney Valley where I live. None [of the records] are later than the 1830’s . . . the floating and bouncing, the eerie motion against the wind. One Norfolk fenman remarked that it “flew like an owl.”

But this spring an Australian reader of BBC Wildlife, Fred Silcock, sent me a copy of his self-published book about will-o’-the-wisps Down Under, where they’re called Min Min Lights. It’s based on more than 600 first-hand accounts, and ends with an extraordinary theory about their origins.

Mabey mentioned how Silcock obtained physical evidence for Barn Owl bioluminescence: “He commissioned histological examinations of a number of road-kill barn owls . . . [examinations] revealed dermal structures bearing similarities to known organs of luminescence found in some fish species.”

The Min Min Light (nonfiction book by Silcock, revised edition)

From page 49:

Eddie Sutton of Logan, Victoria, told me of a walk around the farm he took with his grandfather one day . . . when Eddie was a boy. They came upon a dead bird, which Eddie said he later believed was a Barn Owl. ‘That looks like the bird that lights itself up,’ said grandfather.

Eddie’s grandfather, long ago, once went to sleep on a haystack. He was awakened by a bright light next to him. The light rose quickly and flew away, revealing itself as a bird.

From page 50:

“The wife was with me [Mantung, South Australia] and we went into a paddock . . . we saw a bright orange light shoot up from the ground and hover over the trees . . . about 150 metres away. As we got closer the light came down and settled into the canopy of one tree. After a minute or so the light shut off and sitting where it had been was a white owl . . . The Barn Owl is white, isn’t it?” (words of Dennis Stasinowsky)

Marfa Lights of Texas (differs from Min Min and will-o’-the-wisp)

Residents around this part of the state, human residents, see some evidence of intelligence in these lights; that’s why they are called “dancing devils.” Along with that, Mr. Bunnell, one of the world’s leading authorities on the “ML’s” (mystery lights) has been amazed by their complexity. It seems that the scientists, including Bunnell, have no good explanation for that complexity. Non-living entities are deficient, entirely deficient, in any reasonable way, when it comes to reasons for dancing lights, and the dancing are far too complex.

Owls or Pterosaurs for Marfa Lights?

Last week’s press release “Unmasking a Flying Predator in Texas” briefly mentions bats as prey for a nocturnal flying creature in Texas. Pterosaurs similar to the ropen of Papua New Guinea are mentioned only a bit more than bats. But owls have not a word of coverage, notwithstanding barn owls are said, by a researcher in Australia (Fred Silcock) to sometimes emit a bioluminescent glow, albeit perhaps only rarely. So why is nothing said about barn owls as candidates for what causes Marfa Lights?

I relates to one of the behaviors of those mystery lights:

. . . when one of the bioluminescent predators has been glowing for awhile, not far above the ground, it will be joined by another of its kind, which will then turn on its own glow. After insects have been attracted to that area, the two creatures will separate, which appears to distant human observers to be one light splitting into two. The predators will fly away from each other for some distance, then turn back and fly together. During the separation, bats may begin feeding on the concentration of insects before being caught from two sides by the larger predators.

Barn owls are not thought to be intelligent enough to coordinate multi-predator trapping of prey on the wing.

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cover, front and back of the nonfiction cryptozoology book "Live Pterosaurs in America" second edition

American ghost lights — what are they?

The Gurdon Light (Arkansas), the Chapel Hill Light (Tennessee), the Cohoke Light (Virginia), the Gonzales Light (Louisiana), the Hornet Light (Missouri)–Each has a legend of a headless ghost with a lantern; other places have similar lights with similar legends. What are these strange lights? Let’s find out with a fictional court interrogation of Mr. Gurdon Light (GL) (but the mystery lights themselves are nonfiction).

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Prosecution: Mr. GL, do you live in Gurdon, Arkansas?

GL: In that neighborhood, yeah.

Prosecution: Have you ever been around Chapel Hill, Tennessee?

GL: No, sir. But I have relatives there.

Prosecution: Have you ever been in Gonzales, Louisiana, or in Missouri, or in Virginia?

GL: No, sir. Funny thing you should ask; I have relatives in them places, too.

Prosecution: To get to the point, some time ago you scared some people in Gurdon.

GL: Sorry, sir. I meant no harm.

Prosecution: Did you know that they thought they’d seen a ghost?

GL: Heck, I aint no ghost. I didn’t even see ’em ’til they started a-hollerin’.

Prosecution: But just one night earlier, in that same neighborhood, near the railroad tracks, you were involved in a killing weren’t you?

Defense Attorney: Objection: irrevelant.

Judge: Sustained.

Prosecution: You heard the previous testimony, about how you rushed at these people?

GL: It was an accident. I didn’t see ’em.

Prosecution: What exactly do you do for a living?

GL: Every night I look for food.

Prosecution: Why at night?

GL: It’s what my family’s always done. It’s all we know.

Prosecution: But not always totally in the dark, is it?

GL: No, sir. Sometimes I glow. It runs in the family.

Prosecution: Just how do you make yourself glow?

GL: Heck, I don’t know. It happens sometimes when I’m a-huntin’.

Prosecution: And what it is you hunt?

GL: Whatever I can catch. Sometimes I’m lucky to find a rat.

Prosecution: Did you know that your family is in some biology textbooks?

GL: I don’t read. I don’t know nothin’ about tax books. But my lawyer told me about one book.

Prosecution: What book was that?

GL: A Mr. Silcock in Australia wrote a book. It’s about my relatives there. They can glow, too . . .

Prosecution: But my question is about textbooks. Are you aware of any textbook that has anything about any member of your family glowing?

GL: No, sir. I don’t know nothin’ exceptin’ that one book in Australia.

Prosecution: Did you know that some of your relatives are behind bars?

GL: I heard about ’em, yeah. But it weren’t from the killin’s.

Prosecution: Thank you.

GL: In the killin’s, no people were hurt.

Prosecution: So all of your relatives are innocent?

GL: Yes, sir. Just huntin’.

Prosecution: Did you know that not one of your relatives has ever been seen to glow while behind bars?

GL: Funny thing you should ask. We often glow when we’re hungry. Behind bars, vittles are handy. So I was a-thinkin’ maybe they don’t glow ’cause they’re a-feedin’ good.

Prosecution: But are you aware that no scientist has ever said anything about you or your relatives glowing?

GL: Exceptin’ Mr. Silcock.

Prosecution: Getting back to the point, you flew at these poor terrified people, did you not?

GL: Flyin’s how we get around. I meant no harm.

Prosecution: One more thing: Did we get your name for the record, your official name?

GL: Tyto. Tyto Alba.

Prosecution: Do you have a nickname?

GL: Barney. Some folk call me “barn owl.”

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According to the Australian author Fred Silcock, some barn owls glow, sometimes. The strange bobbing lights are often called Min Min lights. It appears to be an intrinsic bioluminescence that may be triggered by hunger. At any rate, not all barn owls glow and those that do glow do so only sometimes. Some observations in Australia reveal one cause for the glow: Hungry owls can catch insects when rodents are scarce. Bioluminescence in some barn owls appears to be the cause of the whiteness of the underside feathers: More light passes through white feathers.

The Gurdon Light, Chapel Hill Light, Cohoke Light, Gonzales Light, and Hornet Light (and others) resemble the movement of a lantern being carried by someone who is searching for something. The light bobs up and down a bit and flies back and forth because a barn owl is searching for food. It may be rare enough that rodents have not developed any fear of it; insects are attracted to it.

How do glowing barn owls relate to modern living pterosaurs? When a strange light behaves like a hunting barn owl, it may be just that. But when it flies too fast and glows too brightly, it may be related to the ropen light of Papua New Guinea: It may be a bioluminescent pterosaur.

The Marfa Lights, of Texas, appear so different from many “ghost lights” that a ropen-light interpretation has been suggested, for they sometimes coordinate their glowing flights in what seems to be a complex hunting technique. And they flash too brightly and fly too fast to be barn owls. They do not suggest a headless ghost looking for its head, but a shrewd predator looking for bats: perhaps a predator with a head for hunting the Big Brown Bat, common in that part of Texas.

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