Birds are helpful in the farm because they eat bugs which harm the crops. But they also eat seeds that you plant in the ground. One way to prevent bird damage is to use flash tape in the area where you just seeded.
Flash tape is a non-sticky reflective tape which you drape across your plot using poles or sticks. They are easy to use and install.
Since they are made of plastic, I will have to find ways to recycle them or use use other methods such as discarded CD/DVD discs or a scare crow when I have my own farm.