50 Brownies and Guides witnessed a pregnant pig preparing her nest during a farm visit.
The 1st and 2nd Ruislip Guides and 1st Ruislip Brownies were touring Kew Little Pigs in Amersham when Julia the pig began to farrow, indicating she is almost ready to give birth.
The group also spent time with piglets from other litters, as well as older pigs, goats, and chickens.
Guide leader Lindsey Gregory, who organised the trip, said: "It was a fantastic evening at Kew Little Pigs.
"The girls were the only guests that evening, so they had the run of the farm.
"They loved visiting all the pigs.
"The adult pigs particularly enjoyed being brushed and if you managed to get the right spot they went to sleep.
"And the piglets were running around to greet them and enjoyed sitting on their laps being cuddled.
"The goats and kids were a firm favourite too."
Olivia Mikhail, owner of Kew Little Pigs, said: "We love to have visits from groups like the Brownies and Guides, and what a brilliant time to come for them.
"Not only did they get to enjoy the farm, but they also got to see the start of Julia's labour which is a great learning experience."
Kew Little Pigs, an ethical breeder of miniature pigs, launched the Pigs For Schools Scheme in 2021 which has reached 100,000 children with school visits, discount vouchers, and the chance to start a school pig club, where the miniature pigs come to the school.
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