A video posted on Twitter on Sunday has some people thinking they see a bunny and others thinking they see a bird.
The optical illusion video, posted by University of Oslo researcher Daniel S. Quintana, shows someone petting an animal. Some see a bird, whose beak is pointing up, and others see a bunny with white on the tips of its ears.
"Rabbits love getting stroked on their nose," Quintana tweeted with the video.
Rabbits love getting stroked on their nose pic.twitter.com/aYOZGAY6kP— Dan Quintana (@dsquintana) August 18, 2019
Not sure if rubbing left looking rabbit on the nose— ꜱᴡᴀᴘɴɪʟ ಠ_ಠ ʙʜᴀᴛɪᴀ (@synbiocs) August 18, 2019
an upward looking bird on the head (ears=beak) pic.twitter.com/RxTMwWD7za
The optical illusion came to life, it's official, someone has a magic pen!!! pic.twitter.com/EDX84LTzT8— Keisha Renee (@Broadwaybandit5) August 20, 2019
CNN reported that those who think they see a bird are correct. The original video appears to have been uploaded to Instagram in May 2017 by Paige Davis, a curator of bird training at World Bird Sanctuary in Valley Park, Missouri.
Quintana said he shared the video based on the old rabbit/duck illusion.
"The static bird/rabbit illusion is well-known within psychology and philosophy, so when I saw a video, I thought it would be interesting to share it, " Quintana told CNet in an email.
"I thought it was fairly clear that the video was of a bird... as you can see the translucent nictitating membrane sweep across the eye horizontally (rabbits don't have membranes like this) and the positioning of the 'ears' are a little strange," he said.
Davis became aware of the viral tweet, and said that the bird is a raven named Mischief.
"Mischief is quite the talk on Twitter today! (Video in my story)," she posted Wednesday. "I can assure you that he is in fact a raven. And a talented raven at that!"
Mischief is quite the talk on Twitter today! (Video in my story) I can assure you that he is in fact a raven. And a talented raven at that! Here’s one of my favorite clips of him saying “hi”. Ravens are incredibly intelligent! They can make and use tools, solve puzzles, recognize faces, and mimic sounds with great accuracy. #mischieftheraven #worldbirdsanctuary #whiteneckedraven
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