India, July 19 -- In a recent social media post, Kate Middleton and Prince William have quietly nodded to a special milestone from their eldest son, Prince George's, early childhood: his first birthday butterfly visit. On July 18, the Prince and Princess of Wales shared a beautiful video of butterflies fluttering in a field across their Instagram and X accounts.

Their post was in support of the Big Butterfly Count, a UK-wide citizen science initiative which encourages people to record butterfly sightings in green spaces to help track the health of the environment.

Captioning the post, the Prince and Princess of Wales wrote, "Today marks the start of the #BigButterflyCount!"

They added, "From now until 10th August, join thousands across...