# Anser albifrons albifrons

> subspecies of bird

**Wikidata**: [Q21367421](https://www.wikidata.org/wiki/Q21367421)  
**Source**: https://4ort.xyz/entity/anser-albifrons-albifrons


## References

1. IOC World Bird List Version 6.3
2. IOC World Bird List Version 7.2
3. IOC World Bird List Version 6.4
4. IOC World Bird List Version 7.1
5. IOC World Bird List Version 7.3
6. IOC World Bird List Version 8.1
7. eBird Taxonomy v2018
8. IOC World Bird List Version 8.2
9. IOC World Bird List Version 9.1
10. IOC World Bird List Version 9.2
11. IOC World Bird List Version 10.1
12. IOC World Bird List Version 10.2
13. IOC World Bird List Version 11.1
14. IOC World Bird List Version 11.2
15. IOC World Bird List Version 12.1
16. IOC World Bird List Version 12.2
17. IOC World Bird List Version 13.1
18. Taxonomy database of the U.S. National Center for Biotechnology Information
19. Integrated Taxonomic Information System
20. Encyclopedia of Life
21. Global Biodiversity Information Facility
22. TAXREF v9.0
23. TAXREF v10.0
24. TAXREF v11.0
25. TAXREF v12.0
26. TAXREF v13.0
27. TAXREF v14.0
28. TAXREF v15.0
29. TAXREF v16.0
30. National Biodiversity Network
31. Nederlands Soortenregister
32. eBird Taxonomy v2019
33. Fauna Europaea
34. Open Tree of Life reference taxonomy version 3.6
35. CalPhotos
36. BISMaL