In late April or early May, both male and female swifts start to build their nests in dark, sheltered locations like chimneys, old wells, air shafts, and sometimes barns or attics. The half-saucer shaped nest is made of twigs and attached to the inside wall of the chimney with the bird's glutinous saliva.

What month do swifts lay eggs?

They start egg laying between mid-May and early July and lay a clutch of up to 3 eggs. Within 5-8 weeks of hatching the chicks will fledge and take to the wing for the first time. Swifts are found all over the UK in the summer.

Where do swifts nest in UK?

Swifts need warm weather to provide a constant supply of flying insects, so they spend only about three months in the UK each year. They arrive from central Africa in early May and make their nests of straw and saliva in church towers and other tall buildings.