Definition

Noun A small North American songbird (Regulus calendula), commonly known as the ruby-crowned kinglet. It is characterized by its olive-green plumage and, in the male, a distinctive but often concealed red crown patch. It is noted for its loud, complex, and melodious song.

Usage and Examples

• The regulus calendula is a common sight in coniferous forests during its migration.
• Birdwatchers listen for the high-pitched, warbling song of the regulus calendula.
• The male regulus calendula can be identified when it raises its scarlet crown feathers.

Advanced Usage

• In ornithological texts, the scientific name Regulus calendula is used for precise taxonomic classification, distinguishing it from other kinglet species like the golden-crowned kinglet ().

Variants and Related Words

• Ruby-crowned kinglet: The common English name for .
• Kinglet: The general term for small birds in the genus .
• Regulus: The genus name for kinglets, meaning "little king" or "prince."

Synonyms

• Ruby-crowned kinglet

Different Meanings

• The term regulus calendula refers exclusively to this specific biological species. It does not have other general or figurative meanings.

Notes

• As a scientific binomial name, Regulus calendula is always italicized in formal writing. The genus name () is capitalized, while the species epithet () is not.

Noun

1. American kinglet with a notable song and in the male a red crown patch