World Bird List

Species factsheet
Violet-green Swallow (Tachycineta thalassina)

Order: Tachycineta thalassina
Family: Swallows, Martins (Hirundinidae)

Voices can be found here (external link)
Subspecies and Distribution
Subspecie Distribution
thalassina c Alaska, w Canada, w USA and nw Mexico
brachyptera c and s Baja California and w Sonora (nw Mexico)
Annoncer