The Grammy Award-winning star spent the day at the Green Chimneys facility in Brewster, New York, which also functions as a centre for animal-assisted therapy for children.
A source tells MSNBC's The Scoop, "(Apple) raked and mucked the goat's area, cleaned out stalls, fed animals."
"When she was offered an umbrella, she said, 'No, I'm actually enjoying standing out in the rain.'"
Source: WENN