1184-5469 - Millions of butterflies covering trees, Monarch Butterfly Biosphere Reserve, UNESCO World Heritage Site, El Rosario, Michoacan, Mexico, North America
1184-5470 - Millions of butterflies covering trees, Monarch Butterfly Biosphere Reserve, UNESCO World Heritage Site, El Rosario, Michoacan, Mexico, North America
1184-5472 - Close up of Monarch butterflies (Danaus plexippus), Monarch Butterfly Biosphere Reserve, UNESCO World Heritage Site, El Rosario, Michoacan, Mexico, North America
1184-5471 - Millions of butterflies covering trees, Monarch Butterfly Biosphere Reserve, UNESCO World Heritage Site, El Rosario, Michoacan, Mexico, North America
1184-5468 - Millions of butterflies covering trees, Monarch Butterfly Biosphere Reserve, UNESCO World Heritage Site, El Rosario, Michoacan, Mexico, North America
832-1342 - Marbled White (Melanargia galathea), resting on a Field Scabious (Knautia arvensis), covered with dew drops, Biosphaerengebiet Schwaebische Alb biosphere reserve, Swabian Alb, Baden-Wuerttemberg, Germany, Europe