What months of the year do Holstein Friesian cows give birth?
Friesiens, and all cows for that matter, can breed and subsequently calve in any month of the year. Cow fertility typically suffers in hot weather for most breeds, so births tend to slack off 9.5 months after the hottest part of the year. Most North American beef ranchers breed their cows in early Spring, so the calves are born in late Winter.