First recorded

House martins are migratory birds. They are summer visitors to the UK.

Nature's Calendar monitors how early or late house martins arrive in the UK in the spring.

In a location that you monitor regularly (at least once a week), record the date in which you first see a live, active house martin after noticing their winter absence. This is usually from April.

Available historic data: we have excellent data from 1907-1999 (5304 records)