Trees grew leaves as camouflage so birds would`nd nest in them. Don`t ask.
A childhood belief about plants

others believed things like this
- at the age of seventeen my sister thought another name for a pigeon hole was a birds nest.— Sophie
- I believed that leaves on trees only became individual when you you close to them, and then I got glasses.— nola
- When I was about seven, I was utterly convinced that chickens had leaves and trees had feathers.— Confused
- When I was a kid I thought that the wind was caused by the trees fanning their leaves...— GDP
- when I was very young, I used to beleive that the leaves rustling in the trees made the wind blow— Ellona
- My das convinced me that the birds which sat on our trees wanted to steal them. — belle