Definition

1. Noun:
   • A species of swallow: Hirundo nigricans is the scientific name for a specific bird species, commonly known as the tree martin or the black-fronted swallow, found in regions including Australia and Polynesia.
   • A bird nesting in tree cavities: This term specifically refers to a bird that characteristically builds its nest inside natural hollows or cavities in trees.

Usage Examples

• Noun:
  • We observed a pair of Hirundo nigricans entering a cavity in the old eucalyptus tree.
  • The Hirundo nigricans is known for its agile flight over open woodlands.

Advanced Usage

• In scientific and ornithological contexts: The term is used formally in taxonomy and biological studies to precisely identify this species, distinguishing it from other swallows and martins.
  • The study focused on the migration patterns of Hirundo nigricans.

Variants and Related Words

• Tree martin: A common English name for this bird.
• Black-fronted swallow: Another common name referring to the same species ().
• Hirundo (genus): The larger genus to which this species belongs, encompassing many swallows.

Synonyms

• Tree martin
• Black-fronted swallow

Related Phrases

• Cavity nester: A descriptive phrase for birds, including , that nest in holes in trees.
  • Like many cavity nesters, the Hirundo nigricans faces competition for nesting sites.

Noun

1. of Australia and Polynesia; nests in tree cavities