Green-throated Mango hummingbird drinking from a Madar flower (Calotropis gigantea) in Schoon Ord, WBD, Guyana. Taken: 12 January, 2014Camera: Canon EOS 6DFocal length: 420mmAperture: ƒ/5.6Shutter speed: 1/1600sISO: 640Flash fired: yes