The Common Blackbird of the nominate subspecies is 23.5 to 29 cm (9.25 to 11.4 in) in length, has a long tail, and weighs 80-125 g. The adult male has glossy black plumage, blackish-brown legs, a yellow eye-ring and an orange-yellow bill. The bill darkens in winter. The adult female is sooty-brown with a dull yellowish-brownish bill, a brownish-white throat and some weak mottling on the breast. The juvenile is similar to the female, but has pale spots on the upperparts, and the very young juvenile also has a speckled breast. Young birds vary in the shade of brown, with darker birds presumably males.
Habitat and Distribution
The Common Blackbird breeds in temperate Eurasia, North Africa, the Canary Islands, and South Asia. It has been introduced to Australia and New Zealand. The bird is common over most of its range in woodland, the Common Blackbird has a preference for deciduous trees with dense undergrowth. However, gardens provide the best breeding habitat.
This bird is omnivorous, eating a variety of insects, earthworms, seeds and berries. It feeds mainly on the ground, running and hopping. It pulls earthworms from the soil, and roots through leaf litter for other invertebrates.
They nest in a creeper or bush, favouring evergreen or thorny species. Sometimes the birds will nest in sheds or outbuildings where a ledge or cavity is used. The cup-shaped nest is made with grasses, leaves and other vegetation, bound together with mud. It is built by the female alone. She lays three to five (usually four) bluish-green eggs marked with reddish-brown blotches.
Calls and Songs
The male’s song is a varied and melodious low-pitched fluted warble. It has other calls, including an aggressive seee, a pook-pook-pook alarm for predators like cats, and various chink and chook, chook vocalisations. In the evening it gives chink-chink call.