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TIL that by petting your bird on its back, tail or under the wings, you might induce such hormonal and behavioral responses that the bird sees you as a reproductive partner, and that can lead it to be sexually frustrated, resulting in harmful behavior towards you and the bird itself.

pY16e TIL Eyestalk ablation is a practice in prawn and shrimp aquaculture where one or both eyestalks of female prawns are removed or destroyed to stimulate faster reproduction
oR1lY Today I learned how the individual days of the week got their name. The individual days of the week got their names from the ancient Romans, who named them after the seven visible celestial bodies known at the time: Sun, Moon, Mars, Mercury, Jupiter, Venus, and Saturn ¹.
8Bb4 TIL The oldest third party in the United States is the Prohibition Party, founded in 1869 to ban alcohol and still going strong today, even getting 512 votes in the 2012 presidential elections!
R5dm6 TIL John Lennon's song "Imagine" was played at Rosalynn Carter's funeral by Garth Brooks, Trisha Yearwood in church. Even though lyrics say “imagine there’s no heaven”, Jimmy Carter was touched by it and said through his work in 125 countries, the song was used almost equally with national anthems
9wEDm TIL that Charles Barbier invented "night writing," a raised-dot writing system for the blind in 1815 years before Louis Braille adapted and refined it into the system we use today. Despite being mostly forgotten, Barbier laid the foundation for tactile literacy.