Spring has sprung in the Northern Hemisphere, and so have these cows. After being released from their indoor winter housing at a U.K. dairy farm this month, they were filmed performing a celebratory "dance" as they hit the pasture:

This video comes courtesy of Compassion in World Farming, a 45-year-old animal-welfare charity that advocates for livestock rights. While CWF says these cows "could not have been happier" to frolic in open fields, it adds that many cattle farms around the world never experience such a joyous spectacle.

"Sadly, these cows are the lucky ones," the group writes on its website. "Some dairy cows never get to leave the confines of their sheds, but instead are kept indoors all year round in intensive zero-grazing systems. ... We believe that all cows should be given access to pasture and want to see an end to the practice of zero-grazing."

And, in addition to the more obvious benefits of letting cows graze on grass, it can also give them a chance to enjoy impromptu Dixieland jazz concerts.

Russell McLendon ( @russmclendon ) writes about humans and other wildlife.

Watch: Cooped-up cows celebrate spring
There's nothing like a good springtime romp after spending winter indoors, especially if you're a cow.