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Tree Swallow Tachycineta bicolor

Flight call description Primary flight call is a variable, liquid, rolling "chi-deep". During aggressive interactions, also gives a scratchy, descending "tzeev". On the breeding grounds gives a whistled "tsuii" and a variety of other calls.


Fig.1. New Jersey August 15, 2001 (MO).

"Chi-deep" call from bird in flight.


Examples     Diurnal


Similar species Distinctive.


Behavior Primarily a diurnal migrant. Gives flight calls frequently while perched and in flight during the day. Not known to give flight calls at night.