The BTO’s Nest Record Scheme (NRS) gathers vital information on the productivity of the UK’s birds, using simple,
standardised techniques.We monitor over 100 nest boxes each year as well as monitoring breeding waders and
Nightjars and Swallows. All our record are submitted to the BTO for national colation and analysis.
National NRS data are analysed annually and the results are published in the ‘Breeding Birds in the Wider
Countryside’ report along with information on species’ abundance obtained through other BTO monitoring
schemes. Nest record data are also used to investigate the causes of species-specific trends in breeding
success .A species’ population size is dependent on survival rates, movements of individuals and levels of
productivity. The NRS is able to provide the vital evidence needed to confirm whether a species in decline is
encountering problems at the nesting stage.