1921 Onward, Occupied Swift Nests, UK

doi:10.15468/3es6ec

1921 Onward, Occupied Swift Nests, UK

Citation

Royal Society for the Protection of Birds (2024). 1921 Onward, Occupied Swift Nests, UK. Occurrence dataset https://doi.org/10.15468/3es6ec accessed via GBIF.org on 2024-12-15.

Description

The dataset is intended to be a comprehensive inventory of occupied common swift (Apus apus) nests (where swifts were observed using a nest site cavity). It includes records collected as part of various swift mapping projects including The Swift Inventory, The Swift Survey and The Swift Mapper. The aim of these projects was to better understand the reasons for the decline in swifts in the UK, and to help target conservation of swift nest sites. They collated data from a variety of sources, primarily a public request for information and local surveys.
Between 2009-2015, records were collected as part of the ‘Swift Inventory’. This was a cooperative project involving the support of Concern for Swifts - Scotland, London's Swifts, Northern Ireland Swifts, the RSPB, Swift Conservation and UK Swifts. The ‘Swift Survey’ then ran from 2016 -2019. This was a national survey, including a website developed by Environmental Resource Management (ERM) to collect data from the public on nesting swifts. From 2020 onwards the ‘Swift Mapper’ tool has been used to collect records. The Swift Mapper is a mapping tool involving RSPB, Natural Apptitude, Swift Conservation, Action for Swifts and Swifts Local Network.
Records prior to 2009 were provided by swift conservation groups and RSPB surveys.
Accompanying datasets of nest boxes, previously occupied nests and low-level screaming swifts (probable breeders) are also available on the NBN. This dataset will be updated annually.

Purpose

Sampling Description

Quality Control

The public has submitted many of these data. Although the level of misidentified records may be higher than in datasets collected exclusively by trained field-workers, this is mitigated by the large sample size.
These data have been mapped and checked for sensitivities and typographical/ geographical errors. Data have been checked using the NBN Record Cleaner.

Method steps

The swift mapping projects collated data about swift nest sites from as many sources as possible. In 2009, members of the public were asked to complete a form to report swift nest details. Records collected in 2009, and in previous years, were provided by swift conservation groups (Concern for Swifts - Scotland, London's Swifts, Northern Ireland Swifts, Swift Conservation and UK Swifts). Data were also drawn from previous RSPB surveys (swift survey in 2007, and Homes for Wildlife survey in 2008). From 2009-onwards, records have been submitted using an online form, as part of the Swift Inventory (2009-2015) the Swift Survey (2016-2019) and then Swift Mapper (2020 onwards). Additional records were contributed by Kirtlington Wildlife and Conservation Society, Cambridgeshire Bird Club, Dorset Wildlife Trust, Bristol Naturalists Society, Glasgow Museums BRC, SOC-Highland and Perth and Kinross Council, Ludlow 21. The Count attribute is reported as the approximate count of nests. Due to the numerous data sources, the count attribute may refer to either the approximate number seen at a site on one occasion, or on numerous occasions. Records submitted through the Swift Mapper, with a count of zero/blank/unknown but where nests were recorded as seen were given a ""presence"" value and are included in this dataset.

Taxonomic Coverages

Geographic Coverages

Coverage is UK wide. There may be some bias towards more densely populated areas. Many records prior to 2009 were provided without adequate geographic information to enable them to be mapped. Where possible, a postcode was assigned to these records using Royal Mail's Postcode Finder. All records with valid postcodes were assigned a grid reference corresponding to the centroid of the postcode area. For streets spanning multiple postcode areas, the grid reference corresponds to the centroid of a central postcode on the street. Where it was not possible to assign a postcode to a location, Google, Google Maps or Ordnance Survey maps were used to assign latitude and longitude or a grid reference. Records with latitude and longitude were mapped at 1 km resolution. In some cases, grid references were assigned by locating villages on maps. The resolution of these records ranged from 1 - 10 km.
After the online recording tools were introduced in 2009, it was possible to enter records with more precise geographic locations and the Swift Mapper system includes aerial imagery to facilitate the capture of record locations.

Bibliographic Citations

Contacts

originator
Royal Society for the Protection of Birds

metadata author
Royal Society for the Protection of Birds

distributor
NBN Atlas
27 Old Gloucester St, Holborn
London
WC1N 3AX
London
GB
email: admin@nbnatlas.org

Conservation Data Management Unit
administrative point of contact
email: dataunit@rspb.org.uk