John Ashbery, winner of the 1976 Pulitzer Prize for his collection Self-Portrait in a Convex Mirror, has died age 90 at his home in Hudson, New York.

Ashbery was recognised as one of the greatest 20th-century American poets. Lauded as a Nobel nominee, he won countless prizes in addition to his Pulitzer; the National Book Award, the Yale Younger Poets Prize (for his first collection, Some Trees, in 1956), the Bollingen Prize, the Ruth Lilly Poetry Prize, the Griffin International Award, and a MacArthur "Genius" Grant.