Your mission, should you choose to accept it, is to enter the pen and check if a 3 hour old calf has received his all important first drop of milk.
After giving birth some animals can be very protective of there young, and rightly so, for all this cow knows I could be a danger to the new born. However this video highlights the potential dangers faced by farmers (and vets) when dealing with livestock. Needless to say I left her alone after that and gave her time to settle. She still remains dangerous, but I managed to slip in and check the calf and bolt out without getting in her way. In a day or so she will cool down and get used of her new arrival.
(BTW a lovely heifer calf and great to see that not even an event like that could wake the pigs from there mid day nap)