The Humm-Bug Hummingbird Protein Feeder Keeps Your Hummingbirds Supplied With Fresh Meat. Hummingbirds need nectar for energy and they also need protein they get from pollen and small bugs they eat 'on the fly'. One reason you don't see the female Hummingbird a lot in June is that she is staying close to the nest and feeding her chicks bugs. Make it easier on mom. Hang the Humm-Bug Hummingbird Protein Feeder. Place a couple of bananas in the feeder. In about a week the feeder will be swarming with fruit flies and your Hummingbirds will be shopping for dinner. Bright red with a perch for resting. About 10" hanging chord. About 12" x 6".