If you like hummingbirds, you might have spent some time shopping around for wildlife accessories for your backyard.
When you look for helpful products to attract hummingbirds to your yard, you may have seen hummingbird houses like these for sale on Amazon
The problem is that hummingbirds can't use these houses. Birdhouses like those are designed for cavity nesters
As the name suggests, cavity nesters build their nests in cavities; in the wild, this is usually in a tree hollow.
However, hummingbirds aren't cavity nesters. You can see in the image above that hummingbirds don't nest in cavities.
These nests are usually built on tiny branches or the forks of trees high above the ground, so they don't need birdhouses.