This is stated in a message on the website of the non-profit organization Sesame Workshop.
“The legendary puppeteer behind the images of the Big Bird and the Oscars died today, December 8, at the age of 85 in his home in Connecticut at the age of 85,” the text says.
On February 26, 2018, American animator Bad Luckey, author of the famous cowboy Woody from Toy Story, died in the United States at the age of 84.