tree swallow
Học thuậtThân thiện
Definition
Noun: 1. A small, migratory songbird of North America (Tachycineta bicolor) with glossy, bluish-green upperparts and white underparts, known for nesting in natural or artificial cavities, often in trees. 2. A bird of Australia and Polynesia (Callichelidon nigricans, formerly Hirundo nigricans), also known as the White-backed Swallow, which nests in tree cavities or similar hollows.
Usage and Examples
- The tree swallow is one of the first migratory birds to return to northern breeding grounds in spring.
- We installed a nest box by the pond, hoping to attract a pair of tree swallows.
- Ornithologists study the tree swallow as an indicator species for environmental health.
Advanced Usage and Notes
- The term "tree swallow" refers to two distinct bird species on different continents that share the behavioral trait of nesting in cavities. The North American species is more commonly referred to in general English contexts.
- In birdwatching and ornithology, the full binomial names ( and ) are used to avoid ambiguity.
Variants and Related Words
- White-backed Swallow: An alternative common name for the Australasian .
- Swallow (noun): The general family of birds (Hirundinidae) to which the tree swallow belongs, characterized by their graceful flight and insect-catching habits.
- Cavity nester (noun): A bird that nests in holes or hollows, a category that includes the tree swallow.
Synonyms
- For : (No direct common synonym; identified by its full name or as a type of swallow).
- For : White-backed Swallow.
Related Phrases and Terms
- Aerial insectivore: An ecological term describing birds like the tree swallow that catch insects in flight.
- Nest box/Birdhouse: A human-made cavity used by tree swallows for nesting when natural sites are scarce.
Noun
- of Australia and Polynesia; nests in tree cavities
- bluish-green-and-white North American swallow; nests in tree cavities