Hummingbird Nests are as Small as a Thimble, Be Careful Not to Prune Them

The nests usually are usually built on a branch with a downward-slant, and often you will find them on a branch hanging over running water or open space, according to The Hummingbird Project.

They construct their nests out of spider webs, lichen and plant matter, meaning they are extremely delicate. The lichen also does a good job of camouflaging their nests.