Historically, the true sparrows were found throughout Europe and in parts of Asia and Northern Africa. However, human travellers that settled on other continents including Australia and America introduced sparrows to these areas, where they are now considered to be part of the native wildlife.
Due to their small size, sparrows are prey to numerous predators within their native environments all around the world. Cats, dogs, snakes, foxes and birds of prey are just a handful of the natural predators of the sparrow in the wild.
Sparrows breed when the weather begins to warm in the spring, when female sparrows make nests in trees and rafters in which to lay their eggs (an average of 4-5 are laid per clutch). The female sparrow incubates her eggs which hatch in only a couple of weeks, when the vulnerable chicks are cared for until they are strong enough to fledge (leave the nest)>
Today, there is little concern over the sparrow populations although it is possible that populations will be affected by the ever changing weather conditions as a result of global warming and therefore, drastic climate change.