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CHIMNEY SWIFT / COMMON SWIFT


by Adrian Binns 02/06

 

 

CHIMNEY SWIFT
Chaetura pelagica

COMMON SWIFT
Apus apus

 

 

© A & J Binns
 

Size and Structure

5 . Considerably smaller than Common with thickset body with broad wings

7

 

Overall Color

Uniform grey-brown plumage

Sooty-brown with dark underparts and a faint pale throat

 

Flight

Alternating, fast on backswept wings, and slow. With shallow wingbeats, almost bat-like fluttery relieved by glides

Very fast wingbeats (not so fluttery) followed by long glides

 

Wings

Broad wings

Long sickle shaped wings

 

Tail

Squared off (with fine spines)

Forked though usually seen as pointed

 

Call

Rolling twittering chip, chip, chip, chip

Piercing scream srreeee