This week Britain’s BBO Wildlife Trust shared a glimpse into the underwater world of swans and ducks.
Ever wondered what swans are doing when their heads are underwater? Now you know!— BBO Wildlife Trust (@BBOWT) November 5, 2019
video by Jack Perks pic.twitter.com/NkXrH1pwDH
Mute swans have such long necks that they can feed on the bottom while floating on the surface. Ducks have to dive.
While the swan is feeding tufted ducks come and go, their bodies so buoyant that their feet must flap continuously to keep them submerged.