Tree sparrow  (Passer montanus)

Tree sparrows feed mainly on plant matter, including seeds, buds, shoots, berries and flowers, they also take invertebrates such as grasshoppers, beetles and spiders when available. The young are fed entirely on invertebrates in their first week (2). The breeding season is between mid April and early August. The nest is built in holes, dense conifers or occasionally in old nests of larger birds. Two to three broods can be produced a year, each containing 2-7 eggs. The incubation duties are shared by both parents; after 11-14 days the chicks hatch and fledging occurs after a further 15-20 days. (2).