Observing the Herd's Movement

What happens here

After some effort, several cows and calves start to emerge from the woods, making their way towards the farmer. He comments on their progress, noting that they are looking for the easiest path and are slowly making their way up a hill. The farmer identifies one of the cows as 'Big Bud' who is pushing other cows. He notes that the new calf and its mother are behind the main group. He also shows off his vintage 'Blue Blocker' sunglasses, highlighting their ability to cut glare in the bright snow.

Goal: Monitor the cattle as they move and identify individual animals.