Schemes including Aegolius funereus

• eBird/Clements Checklist 6.8 Aegolius funereus
• IUCN Red List of Threatened Species. Version 2012.1 Aegolius funereus
• eBird/Clements Checklist 6.7 Aegolius funereus
• IUCN Red List of Threatened Species. Version 2012.2 (106002291) Aegolius funereus
• NatureServe Explorer: An online encyclopedia of life. Version 7.1 (ELEMENT_GLOBAL.2.105053) Aegolius funereus
• eBird/Clements Checklist 6.9 Aegolius funereus
• GBIF (5739298) Aegolius funereus
• eBird/Clements Checklist v2017 Aegolius funereus