Not easy to relate to things you can’t see like the earth’s magnetic field. Looking at birds helps, learn from their annual movements. In Europe at this time of the year many birds migrate southwards. Little songbirds travel alone and mostly at night so they won’t be noticed by their predators. Even newborn birds know exactly where to go: imprinted. Birds use the stars, smell, coastline and the earth’s magnetic field to orientate. Once we could not explain where the birds, like the swallows in the woodblock print from 1555, went and assumed they hide in the winter months, sometimes under water, at the bottom of a lake.