First recorded

Sand martins are migratory birds. They are summer visitors to the UK. Nature's Calendar monitors how early or late sand martins arrive in the UK in spring.

In a location that you monitor regularly (at least once a week), record the first time you see a live, active sand martin after their winter absence. They arrive from March/April.

Available historic data: we have very good data from 1903-1999 (3045 records)