Video by @joelsartore | A white-faced whistling duck at @lincolnchildrenszoo in Nebraska. Found mostly in sub-Saharan Africa and South America, they’re distinguishable by their bright white faces in contrast to their dark necks and bodies, and as their name implies, they have a very high-pitched call. They can be found in freshwater wetlands and forage mainly at night for grass, seeds and aquatic molluscs. During breeding season, these ducks undergo a flightless moulting period during which they’re quite vulnerable to predators. At that time, they often make their nests in dense areas of vegetation for the utmost protection. To see a portrait of white faced whistling ducks, check out @joelsartore! . . #savetogether #ducks #whistlingduck #animalfacts #wildlife #wildlifephotography #nature #natgeo #photoark

A post shared by National Geographic (@natgeo) on Jun 6, 2017 at 7:37am PDT

Photo @ladzinski / A lightning fast #CliffSwallow, flying low on the surface of a pond catching insects with ease. (Swipe through the carrousel to see more Cliff Swallow and #BarnSwallow pics) These colorful birds are extremely efficient hunters, feeding primarily on flying insects and small bugs, even in water. They thrive in human populated areas, hunting and nesting affectively on man made structures like bridges, barns, houses and buildings. Barn Swallows are wide spread, found throughout Europe, Asia, Africa, Australia and the Americas and are quite commonly seen. I shot these photos over the course of a couple of hours crouched in an icy pond, soaking wet and holding position near my home in #Boulder Colorado. My feeble attempts to stay warm and dry we're quickly overshadowed through the sheer entertainment of trying to keep these birds in focus while they hunted!

A post shared by National Geographic (@natgeo) on Jun 6, 2017 at 9:07am PDT