Western jackdaw

Measuring 34–39 centimetres (13–15 in) in length, the western jackdaw is a black-plumaged bird with a grey napeand distinctive pale-grey irises. It is gregarious and vocal, living in small groups with a complex social structure in farmland, open woodland, on coastal cliffs, and in urban settings. Like its relatives, Jackdaws are intelligent birds, and have been observed using tools. An omnivorous and opportunistic feeder, it eats a wide variety of plant material and invertebrates, as well as food waste from urban areas. Western jackdaws are monogamous and build simple nests of sticks in cavities in trees, cliffs, or buildings. About five pale blue or blue-green eggs with brown speckles are laid and incubated by the female. The young fledge in four to five weeks.

Some jackdaws stays in Sweden in winter, not only in Scania , but also in Uppland . Others are migrating to southern countries. The migrating jackdaws usually come back in March and April. Jackdaws are common in southern and central Sweden , and its prevalence has increased during the 1900s.

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