MaryJanes and Galoshes: Starbucks Bird Feeder- Tutorial Move the glass bottle down lower into the can. Love the idea it needs to be modified. Wonder if I could do this as a gravity feeder for the gerbils.
Log Bird Feeder - 23 DIY Birdfeeders That Will Fill Your Garden With Birds (my note: I haven't looked at all of these, but at least one is a terrible idea. The window birdfeeder -- birds could fly into the glass and hurt themselves.