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. Apodiformes (order)

Anotations

Scope note:

Members of a family containing about 320 species of small, often brightly colored birds native to the Americas. They have compact, strongly muscled bodies and rather long, bladelike wings that, unlike the wings of other birds, connect to the body only from the shoulder joint, allowing them to flap them very fast to hover in mid-air (creating a humming sound) and to fly straight up, down, sideways, and backwards; their bill is typically long and slender, adapted for securing nectar from certain types of flowers; some of the species represent the smallest living bird and are among the smallest of warm-blooded vertebrates.