To the moon and back, twice: here's a look at the most extraordinary journeys birds make across the planet

Every year, millions of birds criss-cross the planet, soaring above our heads in search of food, warmth and mates. From pole to pole, here are some of the most remarkable journeys made by our feathered friends.

So-called “summer migrants”, like the common cuckoo, are bird species which spend roughly October to March in warmer climes…

© La Conversation - vendredi 8 octobre 2021