The male Blackbird starts singing to attract a female around the end of February, although a male often returns to the same partner of the previous year. However, the male Blackbird still tries to impress the female with a courtship display. He fluffs out his feathers for her, spreads out his tail and moves it up and down just like a fan.

After the short courtship display has been approved by the female Blackbird and mating has taken place, the female Blackbird starts looking for a safe place to build her nest. Female Blackbirds can be quite aggressive to each other at this time because they sometimes have to fight over good nesting areas. The female Blackbird constructs a cup-shaped nest out of twigs, grass and moss. Nests are often built in dense hedges or bushes. Sometimes they are built in small trees.

Female Blackbirds can lay up to two to three clutches of eggs. The first clutch of eggs is usually laid around March, the second clutch in May and the third clutch in July. The female Blackbird lays three to five eggs which are a greenish blue colour and speckled with reddish black spots. The eggs are smooth and glossy. The female incubates the eggs for around fourteen days.

When the chicks hatch out, they are born blind, bald and helpless. Both the male and the female Blackbird feed the chicks. The chicks get their first coat of feathers ready for flight in fourteen days and this is when they are ready to leave the nest. When they first leave the nest, the young are divided into groups. Some go to the male Blackbird and some go to the female. The chicks are looked after in their groups for another three weeks. Sometimes the female Blackbird has to shorten her time of looking after her young because she has to brood another clutch of eggs.

Eventually the young become fully independent and may have chicks of their own and so the cycle of life begins again.