Baby owls sleep on their stomachs because their heads are too heavy. They do so until they are large enough to sleep upright. – WTF Fun Facts
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WTF Fun Fact – Owl Head Rotation
An owl can rotate their head the farthest of any animal. They can rotate their heads through 400 degrees in full rotation and 200 degrees in half rotation. – WTF Fun Facts
Source: Farthest head rotation by a mammal | Guinness World Records
WTF Fun Fact – Hooting or Hollering
In 1996, a man in Devon, England spent a year hooting at owls and logging their response only to find out his neighbor was unknowingly the ‘owl’ hooting back. – WTF Fun Facts
Source: https://www.independent.co.uk/news/twit-two-woo-over-the-garden-fence-1252339.html