Not only are these 1,000 Indian Runner ducks fun to watch as they parade to work at South Africa’s Vergenoegd vineyard, but their work — eating the white dune snails that would otherwise threaten the vines — is smart and sustainable.

“Before we had the ducks we had to put down snail bait, a pesticide. But, for the past nine years I have been here we’ve used very little snail bait, almost nothing, because the ducks eat all the snails and other insects,” said Marlize Jacobs, vintner and horticulturalist…

“All over the industry and all over the world, dangerous harmful pesticides are being phased out, so I believe one day you will be forced to use alternative methods because pesticides kill all insects, even the friendly insects,” Jacobs said.

Read more at Reuters’ The Wider Image, and check out the Insider and Great Big Story videos below:

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