Why do birds build nests?
Twig Engineering
Why do birds build nests?
You've probably seen them tucked into tree branches, wedged under roof eaves, or balanced on window ledges — messy tangles of twigs and grass that look like someone started a craft project and wandered off. But birds didn't abandon these structures. They built them on purpose, with zero blueprints and no Home Depot nearby. So why go to all that trouble?
The short answer: eggs. Bird eggs have hard shells, but they're still fragile — drop one on bare rock or dirt and you've got scrambled breakfast instead of baby birds. A nest is basically a crash pad, a soft landing spot that keeps eggs from rolling away or cracking when Mom sits down. It's not fancy architecture. It's egg insurance.
