Whenever I cut my hair in the spring, I always put the hair out for the birds. The swallows like to use it for their mud nests. I guess it makes them stronger.
I remember when I was a kid I asked my mom if I could do this. Apparently there is a really really old superstition that says you should always burn hair as birds will make nests with is, constantly pulling on your hair and you will be plagued for life with headachs.
Well. I never did this and I still have horrible migraines! I think it's really sweet that you do that (I'm totally not superstitious) and think it's pretty whimsical if you think about it.