Black herons in the Moremi Game Reserve, Botswana (@ Ben Cranke/Getty Images)
- Canopy feeding is where fish are drawn to a shaded underwater spot.""Who deploys their wings for this strange dietary regime?
- Cloaked in black, these birds might appear rather doom-laden.""But their comic value should not be underestimated
- African herons look like they\re hiding when about to launch an attack.""What\s your exit strategy?
- Egretta ardesiaca tend to be found south of the Sahara Desert.""Which nature reserve is home to these three?