Glossary Species Home
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.
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.