The sculpture looks like a cow to me, not a moonbird, but I must confess that I've yet to see an actual moonbird. Perhaps this is a faithful representation of moonbirds, whatever they are. On second thought, the words "faithful representation" are almost-certainly banned from the lexicon of Modern Art.
The Museum of Modern Art features in Bluebeard by Kurt Vonnegut, which I've recently read. The main character, artist Rabo Karebekian, rebels against the realistic painting style of his mentor, goes on to create thousands of Modern Art paintings, but because of a certain chemical in the paint he uses, each and every one of them spontaneously disintegrates and is lost forever. It's a symbol of the shallowness of Modern Art, as I read it, but Vonnegut also criticizes the super-realist style of the mentor, so who knows what he's saying.