Tree Swallow is also known as Tachycineta bicolor. They are small sized migratory passerine birds originating from North America. They weigh approximately 20 g and grow up to 5.3 inches in size. They have life expectancy spanning 8 to 11 years. They are insectivore species who strive mainly on insects. They have iridescent blue-green upperparts and white coloration in its belly. The have sharp long beak.