These records of birds have been submitted by contributors to surveys run by the British Trust for Ornithology (BTO) over many years, often in collaboration with other partner organisations. The largest numbers of records originate from Garden BirdWatch, BirdTrack, Bird Atlas 2007-11, Wetland Bird Survey and Breeding Bird Survey, with smaller numbers of records from a wide range of other surveys. Records have been converted to standard biological records, but exclude the identity of the observers (for data protection reasons) and measures of abundance and other biological variables (for reasons of interpretation). The source survey of each individual record is also excluded. Note that some records (generally of rare breeding species vulnerable to human disturbance) have been blurred to a less precise level.
Other partner organisations include: Royal Society for the Protection of Birds; Wildfowl & Wetlands Trust; Joint Nature Conservation Committee and the individual Statutory Country Agencies; Scottish Ornithologists' Club; Welsh Ornithological Society; BirdWatch Ireland; Game & Wildlife Conservation Trust; etc.
Most of the records in this dataset were collected within the context of specific surveys, and verification has been carried out over many years in ways considered appropriate at the time for the needs of those surveys. Importantly, given that many BTO surveys aim to use large datasets to characterise broad trends in common species, in many cases the accuracy of every individual record may not have been considered in detail. However, in most cases, records can be assumed to be Accepted (Considered Correct) in the terminology being adopted across the biological recording sector. Please contact BTO if you have concerns about individual records.
Variable depending upon survey; contact BTO if further information is required.
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Metadata last updated on 2018-01-03 15:50:33.0