Whooping Crane Day is observed worldwide every May 28 to celebrate the whooping crane, the tallest bird in North America, and to promote its conservation due to its endangered status. The whooping crane (Grus americana) is notable for its height of nearly 1.5 meters and a wingspan of 2 meters, with adult birds being white with a red crown and black wing tips. The day was established to honor the efforts of American environmentalist Robert Porter Allen, who began working on saving the species in 1946, and led to the founding of the Whooping Crane Conservation Organization in 1961. Events are organized by zoos, sanctuaries, and conservation organizations across North America to educate the public and raise funds for conservation programs. Participants can engage by learning about the birds, visiting local zoos, donating to conservation efforts, and using the hashtag #WhoopingCraneDay on social media.