This feeder screams "Get your NECTAR here!".
Load it up with a 4/1 mix of water and sugar and off you go! Replace the food every 3 days or so, and clean off any bird poop that accumulates.
August 29, 2016
This thing has been a great bee (or wasp) feeder. One hummingbird came and drank yesterday for a few seconds, then was chased away by a bee. I have since read that bees are attracted to the yellow flowers. I'll reprint them in red. I'm working on a bee guard and also a bowl type feeder which won't leak with temperature and barometric changes.
September 5, 2016
Added a perch and tweaks in Hummingbird Feeder with Perch for critters that want to conserve energy. Reprinting the flowers in red did not discourage the bees. They still harass hummingbirds. Time to design a bee guard.
September 6, 2016
Hang it with this Bottle Feeder Hook.
Fixed a manifold edge on the flower with netfabb. The original file caused slic3r to hang. Thanks to 860williaml for reporting it.
September 8, 2016
Glue a Bee and Wasp Guard to each flower to fend off pesky insects.
Flowers are press-fit, but can be glued on if they come loose.