Most hummingbird enthusiasts believe plant nectar is the primary food of the ruby-throated hummingbird. At the same time, they recognize small insects and spiders are essential to the rubythroat’s diet. However, according to entomologist Dr. Doug Tallamy, renowned native plant proponent, and a growing number of hummingbird experts, hummingbirds are actually insectivorous birds that also consume nectar. In fact, Dr. Tallamy has stated, Hummingbirds like and need nectar but 80 percent of their diet is insects and spiders.”
Research conducted by biologists at Cornell University’s Laboratory of Ornithology seem to corroborate this claim. When the researchers trapped and followed the movements of a female hummingbird for two weeks never once did she eat any nectar.