# Sylvia undata

> species of bird

**Wikidata**: [Q752545](https://www.wikidata.org/wiki/Q752545)  
**Source**: https://4ort.xyz/entity/sylvia-undata


## 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. HBW and BirdLife Taxonomic Checklist v2
8. eBird Taxonomy v2018
9. Clements Checklist of Birds of the World
10. IOC World Bird List Version 8.2
11. IOC World Bird List Version 9.1
12. IOC World Bird List Version 9.2
13. HBW and BirdLife Taxonomic Checklist v3
14. HBW and BirdLife Taxonomic Checklist v4
15. IOC World Bird List Version 10.1
16. Clements Checklist v2019
17. IOC World Bird List Version 10.2
18. HBW and BirdLife Taxonomic Checklist v5
19. Taxonomy database of the U.S. National Center for Biotechnology Information
20. Integrated Taxonomic Information System
21. Encyclopedia of Life
22. Global Biodiversity Information Facility
23. Avibase
24. [Source](http://www.sabencia.net/nomenclator.php)
25. Gwefan Llên Natur
26. [Belgian Species List](http://species.be/en/3987)
27. IUCN Red List
28. [Finnish Biodiversity Information Facility](https://laji.fi/taxon/MX.33949)
29. [Finnish Biodiversity Information Facility](https://laji.fi/taxon/MX.33949/taxonomy)
30. Fauna Europaea
31. [Source](https://app.bto.org/birdfacts/results/bob12620.htm)
32. WikiUMLS: Aligning UMLS to Wikipedia via Cross-lingual Neural Ranking
33. TAXREF v9.0
34. TAXREF v10.0
35. TAXREF v11.0
36. TAXREF v12.0
37. TAXREF v13.0
38. TAXREF v14.0
39. TAXREF v15.0
40. TAXREF v16.0
41. National Biodiversity Network
42. Nederlands Soortenregister
43. Barcode of Life Data Systems
44. Interim Register of Marine and Nonmarine Genera
45. [Portál informačního systému ochrany přírody](https://portal.nature.cz/redlist/v_nd_taxon_category.php)
46. European Nature Information System
47. Belgian Species List
48. Finnish Biodiversity Information Facility
49. The worldwide variation in avian clutch size across species and space
50. British Trust for Ornithology