The House Martin Survey

House Martins taking a break from nest building, by Doug Welch

House Martins taking a break from nest building. Photograph by Doug Welch

We know surprisingly little about House Martins despite the fact that they breed alongside us, using our houses on which to build a nest made of hundreds of beakfuls of mud.

Critically, we do not know why this species is in rapid decline in the UK. Currently, it is ‘Amber listed’ in the Birds of Conservation Concern listings, compiled by the UK’s leading conservation agencies.

Why survey House Martins now?

We need to discover more about House Martins to help us identify why they are declining and provide scientific evidence to help inform policy decisions that could reverse the declines.

The House Martin survey over the next two years will collect more information on population size, breeding ecology and habitat preferences, so we can begin to tackle some key questions about this eagerly awaited summer visitor.

A survey in two parts

  • In 2015 the nationwide random square survey will involve volunteers visiting 2,000 – 3,000 ‘random’ (i.e. pre-selected) 1-km squares throughout the UK. By surveying random squares we can produce a robust population estimate to monitor future changes. Find out more about what the 2015 House Martin Count Survey involves.
  • In 2016 the Nest Monitoring Study will involve volunteers making regular observations at individual nests to collect information about nesting activity. This study will be ideal for observers who have nests on their home or place of work including those who contributed to the 2009-13 survey. Find out more about what the 2016 House Martin Nest Monitoring Study involves.
BTO House Martin Appeal

Help fund the survey now

To gather this vital information and inform conservation we need your help to fund the House Martin Survey. Find out more about the House Martin Appeal or make a donation today.

Donate to the Appeal 

Sign-up to stay informed about the House Martin Survey

We will begin to allocate squares for the 2015 House Martin survey in January 2015. The 2016 Nest Study starts in April 2016.

Register your interest in taking part today by signing up below. We will contact volunteers in early 2015 and early 2016 to give you more information about the parts of the survey you are interested in, so that you can choose whether or not to take part. We will also provide the contact details of your local Regional Representative to get in touch with if you do decide to participate.

We will not pass your email address on to any other organisations and will only use it to contact you about this survey.

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Including your postcode will help us during the allocation of squares

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