Swifts fly to the UK to mate, but a wildlife trust says their nesting spaces are being blocked up.

A campaign week is taking place in a bid to help halt the decline of swifts.

The migratory bird is a summer visitor to the UK after wintering 3,400 miles south in Africa.

The birds mate in the UK, but due to their nests in the eaves of buildings being blocked, the RSPB said numbers were in decline.

Derbyshire Wildlife Trust is participating in a national awareness week, from Saturday until Sunday 7 July, to showcase the birds and their plight.