Some Flowerpiercers in Ecuador: Black Flowerpiercer (Diglossa humeralis), Masked Flowerpiercer (Diglossa cyanea), and White-sided Flowerpiercer (Diglossa albilatera). Flowerpiecers are a genus in the Tanager family (Thraupidae). They are known as flowerpiercers because of their habit of piercing the base of flowers to access nectar that otherwise would be out of reach. This is done with their highly modified bill. Most members of the genus Diglossa are found in highlands of South America, especially the Andes. Source Wikipedia. The Black Flowerpiercer was filmed at an altitude of 3500 meter on the Antisana Vulcano, the other two species at the Guango Lodge on the eastern slope of the Andes at 2700 meter.