![Tree sparrow in hawthorn tree](/media/46506/tree-sparrow-flickr-tony-cox.jpg?center=0.47887323943661969,0.56842105263157894&mode=crop&heightratio=0.5622047244094488188976377953&width=647&rnd=132198586320000000)
Credit: Tony cox / WTML
How do tree sparrows breed?
Tree sparrows mate for life, and nest in loose colonies. The breeding season takes places from May to mid-August. Adults build nests in the cavities of trees or nest boxes, using grass and twigs to form their somewhat messy nests. They are also known to nest in dense bushes. 2-3 broods are usually raised each breeding season, with around 5-6 eggs in each brood.