Northern Rough-winged Swallow

Stelgidopteryx serripennis

(L 5.5" WS 14" Wt 0.56 oz)

Stelgidopteryx means “scraper
wing”...serripennis means “saw
feather”..

Columbus Park

Chicago

23Apr11

Some birds, such as the boubou shrike,
sing in duet, and groups of birds such
as linnets and swallows have been
observed singing in chorus.

(John Bevis)