The Tree Swallow (Scientific Name - Tachycineta bicolor) is probably the most commonly seen swallow in North America. They can be found throughout Canada and the U.S.A. as far north as Alaska. They range south in winter to Mexico and Central America. They have a streamlined body, pointed wings and a notched tail. They have a bluish green back and head with a white underbelly. The bluish green appears iridescent. Females and immature males have more brown showing. Photos were taken in April 2015 at the Iona Beach Regional Park, Richmond, B.C.