I used to think that turkeys were male chickens. Don't know why, but I did.
A childhood belief about birds

others believed things like this
- I believed that chickens pooped eggs (male and female)— WHAT-A-Doodle-WHO??
- I used to believe that chickens reproduced A sexually and that roosters were just handicapped chickens. — Teena Strang
- I thought people from Turkey actually praised turkeys...Anon
- I thought the word mailman was male man and it seemed dumb to me as aren't all men male?— andalite
- I used to think that to desex an animal meant to turn it from a male to a female or female to male.— Phil
- I used to believe that they shoot the chickens we eat one by one at the farm.— A