Birth in a farrowing crate
In his book "The Pig who sang to the Moon", author Jeffrey Masson described a sow's nesting process:
"In the wild, . . . sows getting ready to give birth will often construct protective nests as high as three feet. They line these farrowing nests with mouthfuls of grass and sometimes even manage to construct a roof made of sticks - a safe and comfortable home-like structure. On modern pig farms, where the mother is forced to give birth on concrete floors, her babies are often crushed when she rolls over. This never happens in the wild because the baby simply slips through the nest and finds her way back to her own teat."
Here's how the birth of piglets looks in modern pig meat production.
"In the wild, . . . sows getting ready to give birth will often construct protective nests as high as three feet. They line these farrowing nests with mouthfuls of grass and sometimes even manage to construct a roof made of sticks - a safe and comfortable home-like structure. On modern pig farms, where the mother is forced to give birth on concrete floors, her babies are often crushed when she rolls over. This never happens in the wild because the baby simply slips through the nest and finds her way back to her own teat."
Here's how the birth of piglets looks in modern pig meat production.