Hummingbirds consume more than just nectar. They must have a source of protein and at least half of their diet is small insects and bugs.
But a hummingbird eating suet?
Check out the above photo. Debbie, an employee at the Wild Birds Unlimited of Torrance, CA, put out a fresh Bird Bug Bites Suet Cake and an Allen’s Hummingbird showed up for a bite to eat.
Beyond Bird Bug Bites Suet, we have occasional reports that Ruby-throated and Anna’s Hummingbirds frequent Jim’s Birdacious Bark Butter (a spreadable suet-based product). This usually just happens during the winter.
Hummingbirds that over-winter in areas are usually doing so because they are finding localized insect sources that are often around open bodies of water. Of course, they are sourcing nectar as well.
It is not common for hummingbirds to eat suet. But, stranger things have been known to happen.