, often described as “cigars with wings”, can also be seen performing courtship displays. "V-ing," most pronounced after pair formation, involves two swifts flying together. The rear bird snaps its wings upwards to form a "V," the leader joins, and the pair gracefully glides downward. As their name implies, Chimney Swifts
in chimneys or the walls of abandoned buildings. Historically and currently where suitable habitat still exists, they nest(ed) in large
. Logging removed most natural sites, and Chimney Swifts adapted to ‘human’ chimneys. Contrary to common belief, Chimney Swifts do not nest in colonies. Unmated birds, however, commonly
in large flocks, and sometimes in a
with a single nested pair. Like many other aerial insectivores in North America, Chimney Swifts are experiencing strong
, and are listed by
(scroll down), Manitoba, New Brunswick, and Nova Scotia, and protected in Quebec.