King Charles features in surprise birthday tribute to David Attenborough

Whimsical film shows relay of animals carrying centennial card from Balmoral Castle to naturalist in London

King Charles has featured in a surprise birthday tribute to David Attenborough, with a cast of wild animals helping to relay his handwritten congratulatory centenary card.

The whimsical film, A Very Special Delivery, begins with the king writing his tribute in the library of Balmoral Castle. Charles, wearing an animal-themed tie featuring elephants, reflects on more than 60 years of friendship with the renowned naturalist.