As a general rule in the natural world larger creatures prey on smaller ones. In birds, hummingbirds are as small as it gets. But they are incredibly quick and maneuverable. Typically a large hawk or eagle won’t bother with them, too hard to catch. And even if somehow they were able to catch one, it is too small to make a satisfying meal or even a hearty snack.
However, hummingbirds do have predators you would not suspect. Predators that do not concern other birds. These unusual predators include insects, spiders and fish. (I am not kidding.)
A Praying Mantis will grab an unsuspecting hummingbird if it strays to near.
If a hummingbird gets entangled in spider’s web, the spider will secure the hummingbird so it can’t work loose, let it die, and then eat it bit by bit.
Hummingbirds do catch and eat tiny, flying insects, often just above the quiet surface of a pond. At times a large fish will leap out of the water and grab the startled hummingbird.
And of course, in some cultures, humans are said to relish the taste of properly prepared hummingbird tongue. That, I think, is a myth.