Datasets used in analysis

gbif_gallinula_chloropus_before_including_2011

University of Alaska Museum Bird Collection (UAM), University of Alaska Fairbanks
University of Wyoming Museum of Vertebrates
Denver Museum of Nature & Science Bird Collection
Division of Birds, Museum of Southwestern Biology (MSB), University of New Mexico, Albuquerque
Estonian Nature Observations Database, Estonian Nature Observations Database
Moore Laboratory of Zoology (MLZ)
Museum of Comparative Zoology, Harvard University: Museum of Comparative Zoology, Harvard University
UMMZ Bird Collection
ArtDatabanken: Artdata
Royal Ontario Museum: Ornithology Collection Non Passeriformes - Royal Ontario Museum
Museum of Vertebrate Zoology (MVZ), University of California, Berkeley
Museum of Vertebrate Zoology (MVZ), University of California, Berkeley

gbif_gallinula_chloropus_year_gte_2011

Cornell Lab of Ornithology: eBird
Natural History Museum, University of Oslo: BioFokus
UK National Biodiversity Network: Suffolk Biological Records Centre - Suffolk Biological Records Centre (SBRC) dataset
UK National Biodiversity Network: EcoRecord - Bird records held by EcoRecord for the Birmingham and the Black Country area collated prior to March 2013
CUMV Bird Collection
UK National Biodiversity Network: National Trust - Ickworth species data held by The National Trust.
UK National Biodiversity Network: Merseyside BioBank - North Merseyside Birds (unverified)
UK National Biodiversity Network: Merseyside BioBank - Merseyside BioBank Active Naturalists (unverified)
UK National Biodiversity Network: Staffordshire Ecological Record - SER Species-based Surveys
ArtDatabanken: Artdata
iNaturalist.org: iNaturalist research-grade observations
UK National Biodiversity Network: Thames Valley Environmental Records Centre - Local Wildlife Site Surveys Berkshire
UK National Biodiversity Network: Rotherham Biological Records Centre - Rotherham Biological Records Centre - Non-sensitive Records from all taxonomic groups
UK National Biodiversity Network: Yorkshire Wildlife Trust - Yorkshire Wildlife Trust - Non-sensitive records from all taxonomic groups
UK National Biodiversity Network: National Trust for Scotland - NTS Properties Species Records 1800-2013
The Norwegian Biodiversity Information Centre (NBIC): Norwegian Species Observation Service
UK National Biodiversity Network: National Trust - Wicken Fen nature reserve species data held by The National Trust
(see website)
National Museum of Natural History Luxembourg Recorder database
UK National Biodiversity Network: Humber Environmental Data Centre - Humber Environmental Data Centre - Non Sensitive Records from all taxonomic groups
Estonian Nature Observations Database, Estonian Nature Observations Database
Finnish Museum of Natural History: Fieldjournal.org observation database
UK National Biodiversity Network: Sheffield Biological Records Centre - Sheffield Biological Records Centre- Non-sensitive Records from all taxonomic groups. 
National Biodiversity Data Centre: Birds of Ireland
UK National Biodiversity Network: Cambridgeshire & Peterborough Environmental Records Centre - CPERC Recorders day at Waterbeach barracks and airfield
UK National Biodiversity Network: Bristol Regional Environmental Records Centre - BRERC October 2009
UK National Biodiversity Network: North & East Yorkshire Ecological Data Centre - North and East Yorkshire Ecological Data Centre - Non-sensitive Records from all taxonomic groups. 
UK National Biodiversity Network: National Trust - Heigham Holmes species data held by The National Trust
National Biodiversity Data Centre: Ireland's BioBlitz 2012
Birdlife Finland: Tiira information service
UK National Biodiversity Network: Wiltshire and Swindon Biological Records Centre - Wiltshire & Swindon Site-based Survey Records