Landes, France with 189 records
Teich Bird Reserve, France with 173 records
Extremadura, Spain with 50 records
Monfragüe National Park, Spain with 40 records
Tenerife, Canary Islands with 37 records
Gironde, France with 30 records
Villafáfila, Spain with 26 records
Belén, Spain with 25 records
London, Great Britain with 21 records
Arcachon Bay, France with 20 records
Navarre, Spain with 11 records
Andalucia, Spain with 11 records
Bardenas Reales de Navarra, Spain with 10 records
Trujillo, Spain with 8 records
Regent's Park, Great Britain with 6 records
London Wetland Centre, Great Britain with 6 records
Spain, Spain with 6 records
Soria, Spain with 5 records
Otero de Sariegos, Spain with 4 records
Switzerland, Switzerland with 3 records

This is a list of the top 20 specific localities, sorted by the total amount of materials.