Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. Living Organisms (hierarchy name)
4. living organisms (entities)
5. Eukaryota (domain)
6. Animalia (kingdom)
7. Chordata (phylum)
8. Vertebrata (subphylum)
9. Aves (class)
10. Passeriformes (order)

Anotations

Scope note:

General term referring to members of several species in various families of Old World flycatchers and thrushes, having in common that they all frequently sing at night as well as during the day. The term has been used for well over 1,000 years.