Ducks rest near a pond in Gilan province, northern Iran, on Aug. 5, 2019. (Photo by Ahmad Halabisaz/Xinhua)

A man feeds ducks on a pond in Gilan province, northern Iran, on Aug. 5, 2019. (Photo by Ahmad Halabisaz/Xinhua)

A man feeds ducks on a pond in Gilan province, northern Iran, on Aug. 5, 2019. (Photo by Ahmad Halabisaz/Xinhua)