At our old house we had numerous humming birds build nests in our Leyland Cypress trees. They weaved tiny nests from my horse's tail/mane hair. Those tiny nests were incredibly strong. The birds roost at night and go in a dormant state until sunrise.
They don't have a lot of predators as adults as many predators just aren't fast enough. But, roadrunners can catch them fairly easily. And, they are vulnerable to predators at night when they sleep. The usually sleep perched on a branch or on their nests and they go into almost a comatose state, slowing their heart-rate down significantly. Fortunately, though, they usually sleep or nest on very thin branches/leaves that most predators can't get to.
I rescued one that had gotten itself hopelessly tangled in a spiderweb. I doubt the spider had any intent to eat it... but it wasn't doing it any favors either.