Prince Charles has revealed that he has some favorite houseguests at his home in Balmoral, Scotland, that never fails to bring him delight whenever they "visit."

The Prince of Wales talked about a pack of red squirrels that make themselves at home inside Birkhall, the royal's Scotland estate. As Britain celebrated Red Squirrel Appreciation Day, Charles said that he'd had red squirrels hunting for nuts in "unguarded jacket pockets" at his country house.

Charles thanked the group's volunteers for their efforts in protecting these animals' natural habitat in the woodlands. The royal has been the patron of a charity that works to conserve and protect red squirrels since 2008. Fewer than 140,000 of these British rodents are found across the United Kingdom.

The year before that, he made a five-figure donation to the Red Squirrel Survival Trust upon learning that the species are at risk of extinction as the American grey squirrel are growing in numbers, according to Vanity Fair.  

The Prince of Wales wasn't kidding about having these creatures freely roaming inside his house. His son, the Duke of Cambridge, Prince William, said in an interview with Country Life that he had seen the squirrels at his father's home.

William also said that the Prince of Wales is absolutely "infatuated" with the rodents that his father gave them names. Charles isn't ashamed to talk about this infatuation and even said that he would sometimes run around his house to play with the squirrels.

Meanwhile, the heir to the throne has called on the world's leaders, once again, to work at conserving the earth's resources. At the online Global Energy Forum hosted by the Atlantic Council in the U.S., the Prince of Wales reiterated that he has set up the Terra Carta plan to involve wealthy companies and individuals to funnel billions in recovery efforts for the environment.

Charles said that it is imperative for work to start to fix the "looming climate and biodiversity crisis." Experts said that the world would be a lot different in 10 years if people do not step up and make changes.

The future King of the United Kingdom said that the world needs to shift to more sustainable and equitable habits as soon as possible or risk further destroying the environment until it cannot be saved. Charles said that humankind should learn from the devastations brought on by the COVID-19 pandemic and take steps to make life on this planet healthier.