Birds Can "See Earth's Magnetic FieldBirds Can "See Earth's Magnetic FieldTo find north, humans look to a compass. But birds may just need to open their eyes, a new study says. To find north, humans look to a compass. But birds may just need to open their eyes, a new study says. Scientists already suspected birds' eyes contain molecules that are thought to sense Earth's magnetic field. In a new study, German researchers found that th
