This National Geographic fond d’écran might contain
hêtre, coucher du soleil, lever de soleil, coucher de soleil, lever du soleil, ponderosa, le pin ponderosa, le pin jaune occidental, taureau pin ponderosa pinus, pin ponderosa, pin jaune occidental, pin taureau, pinus ponderosa, pin jaune de l’ouest, and bull pine.
Billions of birds migrate annually across the Western Hemisphere… but if we don’t know where they go when they leave their breeding grounds, how can we protect them?