I used to believe that birds lived in their nests all the time, it came as a surprise when my mom pointed out this fallacy to me well into adulthood, "What! You mean birds just stand around in the trees all night?" Kinda creeps me out now.
A childhood belief about birds

others believed things like this
- My das convinced me that the birds which sat on our trees wanted to steal them. — belle
- Trees grew leaves as camouflage so birds would`nd nest in them. Don`t ask.— DaWind
- I used to believe that it rained when God was upset and that all the birds lived together in one big house.— Rozy
- Bird eggs grow on trees, and they have to go and collect them to put them in their nests.— Ulalia
- i used to think flies were little birds!— unforgiv3n
- I used to believe that birds subsisted on bread.— C.C.