This looks awesome!
And super simple, which I like.
Find some melamine (hard plastic) plates instead of glass, ceramic or porcelain and then get yourself a long carriage bolt, or even better an eye bolt, and some nuts & washers and you're almost there! With a little drilling, put it all together, add bird seed and -voila- birds will flock to your house.
The full tutorial is here on Erin's Creative Energy
What a fun little project.