Tree Swallow
Tachycineta bicolor 双色树燕
The Tree Swallow is a sleek, fast-flying bird with iridescent blue-green upperparts and clean white underparts. It has long, pointed wings and a size of approximately 6 inches.
- First spotted
- 6 Jun 2026
- Seen at
- Seattle, WA
- Group
- Perching
Field marks
- Length
- 6 in · 15 cm
- Colours
- Blue · Brown · Green · White
- Wings
- Broad · Long · Pointed · Tapered
- Tail
- Notched · Square-tipped
- In flight
- Direct Flight · Flap/Glide · Swooping
- Movement
- Resident
- World population
- 19 million