As the sun sets, sparrows tuck themselves into crevices, cracks and nests to sleep for the night. Many bird species build their homes out of dried vegetation but also use man-made structures, including nest boxes. In addition to sleeping in their own homes, sparrows roost in the holes of other birds' nests and in trees and other outdoor objects. Some species of sparrows are extreme regional specialists while others are more widespread.
It is not uncommon for sparrows to be grouped together to roost, especially when the weather turns cold. This type of roost is known as a communal roost and it offers a sense of safety in numbers. Some birds may even burrow into the snow to create a sleeping cavity or tuck themselves in rock crevices to stay warm. Finches, for example, often roost with other finches in coniferous trees on winter nights. Cardinals also love to roost in large groups, huddled on the ledges of buildings and trees. Nuthatches, meanwhile, prefer to seek out old, unused woodpecker holes in tree trunks for their nightly slumber.
During the day, sparrows are very active. They search for seeds, grains and other foods and will often visit home and public bird feeders. When they aren't feeding, sparrows are busy hopping between plants or perching on the ground.
It's important to understand that just like humans, sparrows need a good night's rest. The key to getting a good night's sleep is to keep distractions to a minimum. Stomach sleeping, for instance, can cause neck and back pain, while snoring can exacerbate conditions such as sleep apnea.