Left side before. Right side after. In reality the right side was yesterday's area to graze and the left side is where the cattle are grazing today. The cattle are moving to the left.
Some varieties of grass stay green despite freezing weather while others go dormant until spring. The photo above was just took here in December. This grass is what we call our stockpile for winter. The cows prefer to graze stockpiled grass especially when still green over hay. If your good you can graze stockpiled grass straight through winter without using any hay.
Michael J. Adamucci