Do they get jet lag, I wonder?
This BBC article is short but informative, explaining about long distance birds (Sooty Shearwaters and the champions – Arctic Terns), Elephant Seals, butterflies (Monarchs of course) and salmon.
The fascinating aspect for me is the inbuilt ‘magnetic map’ these creatures have. I learned lots about this recently in the Tim Birkhead’s wonderful book ‘Bird Sense’ that I mentioned in an earlier post. We human beans are learning all the time. We don’t even know what we don’t know!