Credit: Dave Curtis
North American field guide
Common Swift
Apus apus
Explore this bird
Identification
Field notes
16 cm (6") Accidental. Strays to Aleutians (Pribilofs) from Eurasia.
All black except for white throat. Deeply forked tail. Told from the Fork-tailed Swift, another stray from Asia, by its lack of a white-rump patch.
Details in the field
Photo gallery
Credit: Nuchaxo
Watch and learn
Videos
Common Swift numbers declining 'due to property repairs'
Credit: BirdLife InternationalBird Advisor Identification rules 1 variant · 1 rule
These are the observation paths the Bird Advisor can use to identify this species. Each rule is an alternative match.
Common Swift
1 ruleRule 1 13 criteria · confidence 1
- What SIZE was the TAIL ?
- Medium · Long · Very Long · Unknown
- What SHAPE was the TAIL ?
- Pointed or wedge-shaped · Forked · Unknown
- Was the RUMP or LOWER BACK light ?
- No · Unknown
- What colour was the BELLY ?
- Black, purple, or dark · Unknown
- What colour was the BREAST ?
- Black, purple, or dark · Unknown
- What colour was the THROAT ?
- White, or pale (grayish-white) · Unknown
- What SHAPE was the BILL ?
- Straight and thick · Hooked · Downcurved · Unknown
- What LENGTH was the BILL ?
- Very short
- What colour was the TOP of HEAD ?
- Black, purple, or dark · Unknown
- How BIG was the bird ?
- Sparrow-sized
- What TYPE of bird was seen ?
- Swallow-like
- WHEN was the bird seen ?
- Spring · Summer · Fall
- WHERE was the bird seen ?
- Northwestern Canada or United States