# Sylvia althaea

> species of bird

**Wikidata**: [Q604397](https://www.wikidata.org/wiki/Q604397)  
**Source**: https://4ort.xyz/entity/sylvia-althaea


## 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. Clements Checklist of Birds of the World
9. IOC World Bird List Version 8.2
10. IOC World Bird List Version 9.1
11. IOC World Bird List Version 9.2
12. IOC World Bird List Version 10.1
13. IOC World Bird List Version 10.2
14. Freebase Data Dumps. 2013
15. Google Knowledge Graph
16. Integrated Taxonomic Information System
17. Encyclopedia of Life
18. Avibase
19. Gwefan Llên Natur
20. IUCN Red List
21. Nederlands Soortenregister
22. Great Norwegian Encyclopedia
23. Interim Register of Marine and Nonmarine Genera
24. India Biodiversity Portal
25. The worldwide variation in avian clutch size across species and space
26. Norwegian Biodiversity Information Centre
27. Biodiversity Heritage Library
28. Open Tree of Life reference taxonomy version 3.6