Schemes including Podiceps nigricollis

• eBird/Clements Checklist 6.8 Podiceps nigricollis
• IUCN Red List of Threatened Species. Version 2012.1 Podiceps nigricollis
• eBird/Clements Checklist 6.7 Podiceps nigricollis
• IUCN Red List of Threatened Species. Version 2012.2 (106003641) Podiceps nigricollis
• CONABIO (190005AVESB501112) Podiceps nigricollis
• NatureServe Explorer: An online encyclopedia of life. Version 7.1 (ELEMENT_GLOBAL.2.100013) Podiceps nigricollis
• eBird/Clements Checklist 6.9 Podiceps nigricollis
• GBIF (2482065) Podiceps nigricollis
• eBird/Clements Checklist v2017 Podiceps nigricollis