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Getty Images

The Weird Historical Image Scavenger Hunt!

Getty Images
Getty Images

Every day, one of us finds some bizarre historical photo and forwards it around the office. Actually, that's like half the day. We thought you guys might want to play, too. 

Here's how we'll do it: You go find an amazing, puzzling, or otherwise intriguing photo, and leave a link in the comments. For example, I stumbled across the gem above in a recent search for a Monopoly picture. Original caption:

May 25, 1976 — Eight-year-old Mark Harman from London enjoying a game of Monopoly with his brother Graham and sister Belinda, from his bed of nails. Mark is being trained by world Champion Roy Singfield and spends two hours every other evening relaxing on his nail bed.

The Library of Congress and Getty Images are two great places to start.

What Are We Playing For?

Let's raise the stakes. $100 shopping spree in the mental_floss store! Two runners-up will take home mental_floss games. You can enter as many times as you like. Now go do us proud!

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Bone Broth 101
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Whether you drink it on its own or use it as stock, bone broth is the perfect recipe to master this winter. Special thanks to the Institute of Culinary Education

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Why Can Parrots Talk and Other Birds Can't?
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iStock

If you've ever seen a pirate movie (or had the privilege of listening to this avian-fronted metal band), you're aware that parrots have the gift of human-sounding gab. Their brains—not their beaks—might be behind the birds' ability to produce mock-human voices, the Sci Show's latest video explains below.

While parrots do have articulate tongues, they also appear to be hardwired to mimic other species, and to create new vocalizations. The only other birds that are capable of vocal learning are hummingbirds and songbirds. While examining the brains of these avians, researchers noted that their brains contain clusters of neurons, which they've dubbed song nuclei. Since other birds don't possess song nuclei, they think that these structures probably play a key role in vocal learning.

Parrots might be better at mimicry than hummingbirds and songbirds thanks to a variation in these neurons: a special shell layer that surrounds each one. Birds with larger shell regions appear to be better at imitating other creatures, although it's still unclear why.

Learn more about parrot speech below (after you're done jamming out to Hatebeak).

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