Things you will need:
Scrap cardstock or postcard weight junk mail
Glue or Xyron Sticker Maker
Of course you will want to make sure that these birds do not go through the laundry!
Edited 8/19/12 to add: I'm happy that this little project has been pinned/repinned so many times on Pinterest. I had a question about the aluminum tape and where I got it. I found the tape at Home Depot but I don't remember what section of the store it was in. I'm sure if you ask at Customer Service there or at any hardware store they can point you in the right direction.