Occurrences of Animalia Chordata Aves recorded by users of the Birda mobile app (https://birda.org). Species data use the IOC taxonomy (https://www.worldbirdnames.org/new/). Data imported into Birda from external sources (e.g. other birding apps) are excluded from this dataset to avoid the potential duplication of records that may have been previously published to the GBIF by another organisation. Occurrences deemed unreliable or suspicious are excluded from the dataset (see the section on quality control for further details).