Definition

Noun: 1. A taxonomic genus of small passerine birds: Genus Regulus is a biological classification (genus) within the bird family Sylviidae (the Old World warblers). It comprises very small songbirds commonly known as kinglets.

Usage Notes

• This term is used exclusively in scientific and ornithological contexts to classify a specific group of birds. It is not used in everyday conversation.
• The genus name is always italicized in scientific writing.
• It functions as a singular noun (e.g., is...).

Examples of Usage

• Scientific Context:
  • The goldcrest and the firecrest are both placed in the genus Regulus.
  • Ornithologists are studying the migratory patterns of Genus Regulus.
  • This small bird belongs to Regulus, a genus known for its high metabolism.

Advanced Usage

• In Taxonomic Hierarchy: The term is used to specify a level of biological classification.
  • The taxonomic order is: Family Sylviidae > Genus Regulus > Species Regulus regulus.

Variants and Related Words

• Regulus (n): When used alone and italicized, it refers to the same genus. (e.g., was spotted.*)
• kinglet (n): The common name for any bird species within the genus .
• goldcrest (n): , a specific species within the genus.
• firecrest (n): , another specific species within the genus.

Synonyms

• Kinglet genus: A descriptive, non-scientific synonym.

Different Meanings

• Regulus (Astronomy): A bright star in the constellation Leo. This is a homograph (same spelling, different meaning) and is unrelated to the biological term.
• Regulus (History): A Roman cognomen (e.g., Marcus Atilius Regulus).

Noun

1. a genus of birds of the family Sylviidae including kinglets