Description: English: Green Thorntail photo taken at Milpe Bird Sanctuary, (northwest) Ecuador. Date: 21 March 2013, 14:39:03. Source: Own work. Author: Joseph C Boone.
A monograph of the Trochilid, or family of humming-birds /.London :Printed by Taylor and Francis ;1861 [i.e. 1849-1861].biodiversitylibrary.org/page/35246209