Black Nunbird, Rockstone, Guyana. Black Nunbird (Monasa atra) perched on a branch in Rockstone, Guyana. Taken: 17 April, 2016Camera: Canon EOS 7D Mark IIFocal length: 500mmAperture: ƒ/4Shutter speed: 1/100sISO: 800Flash fired: no The sand on the bright orange bill was from the burrow that was being dug into the side of the creek bank below this perch. Photographed in Rockstone, Guyana. Taken: 7 September, 2014Camera: Canon EOS 6DFocal length: 700mmAperture: ƒ/5.6Shutter speed: 1/100sISO: 800Flash fired: yes Black Nunbird (Monasa atra) perched in Rockstone, Guyana. Taken: 7 September, 2014Camera: Canon EOS 6DFocal length: 700mmAperture: ƒ/8Shutter speed: 1/80sISO: 1000Flash fired: no Black Nunbird (Monasa atra) with an insect in Rockstone Village Taken: 27 April, 2014Camera: Canon EOS 6DFocal length: 420mmAperture: ƒ/5.6Shutter speed: 1/200sISO: 1600Flash fired: yes