Explanation:

World Sparrow Day is a day designated to raise awareness of the house sparrow and then other common birds to urban environments, and of threats to their populations, observed on 20 March.
World Sparrow Day 2019: Say, ' I LOVE Sparrows' World Sparrow Day is being observed today to raise awareness about the bird. The need for marking this day was felt due to the tremendous decrease in its population. This year the theme for WORLD SPARROW DAY is I LOVE Sparrows