Ecuador, Mindo, mariposario yard. The smallest hummingbird at the field-site. Woodstars have a very distinctive flight behavior, buzzing and hovering much like a large bee or spaceship. Their wings make an audible humm, which can often be heard well before this species is seen. Rus: Колибри аметистовый Митчелла
A monograph of the Trochilid, or family of humming-birds /.London :Printed by Taylor and Francis ;1861 [i.e. 1849-1861].biodiversitylibrary.org/page/35246373