Study identifies how pigeons navigate using magnetic fields

The video explains an experiment where pigeons were placed in a controlled environment with an adjustable magnetic field. Electrodes in their brains showed neuron activation when the magnetic field changed. This experiment demonstrated how pigeons use variations in the Earth's magnetic field, including direction, intensity, and polarity, to navigate long distances.

What did scientists conclude about how pigeons navigate?

What factors of the Earth's magnetic field do pigeons use for navigation?