We'll also have news about the real songbirds' habitat and winter home, and surrounding conservation issues too. In order to do this, you would first have to keep track of individuals. These bands last for the birds' entire lives. Place tiny radio transmitters on birds. This is very expensive.
Scientists can follow the bird's signal in airplanes or via satellite.
This technique works for only a few weeks or months, until the batteries in the bird's radio transmitters go dead, and works better with big birds, like eagles, who won't be weighed down as much by the equipment. Put some kind of noticeable dye on feathers to keep track of birds, or paint numbers on them. Color-marked birds are hard to follow over migration, and the paint disappears when they molt. Over time ornithologists collect data from these studies to see which birds go where for the winter. It's tricky because they only get return information from a few of the individuals they've studied, and some individual birds break all the rules.