As many of us have done in our own childhoods, we made birdfeeders. However, we had a very interesting conversation before hand which is why we ended up making the bird feeders in the first place.
We recycle & reuse quite a few things and the other day I opened the drawer that I save paper towel & toilet paper tubes in and decided it was time for a project. My drawer was becoming full way too fast (and the boys preschool didn't need any at the present time). We have also been talking a lot about animals and how they survive without someone feeding them. We have a dog and it is the boys job to feed him (although not from the table, which comes up every night at dinner). Anyway, I was explaining how wild animals scavenge for food and that at some times of the year it is harder than others. We went over why bears hibernate and how they can survive and why some animals store food up for the winter months, etc....
So needless to say our next step was bird feeders. The kids had a blast with this and we are now ready for some winter snow (and my drawer of "tubes" is almost empty). We also shipped some off to their Great-Grandmom's so "their" birds wouldn't go hungry either.