IMPOSSIBLE PLACES | 20 Incredible Nests You Won’t Believe Are Real | 4K Travel Documentary

IMPOSSIBLE PLACES | 20 Incredible Nests You Won’t Believe Are Real | 4K Travel Documentary Forget the simple cup of twigs. Across the planet, animals build structures so advanced that human engineers are still trying to copy them. A bird that sews two living leaves shut with spider silk. A pufferfish that draws a flawless 2-meter circle on the ocean floor. A father penguin who holds his egg on his feet for two months in −40°C darkness. And in the Kalahari, a grass ""apartment block"" that weighs a tonne and houses hundreds of birds. This is the countdown of the 20 most amazing nests on Earth — from the tiny bee hummingbird to the sealed tree-nest of the great hornbill, the saliva nests of Borneo's caves, and the record-breaking 2-tonne bald eagle nest. ============================================================= #Nests #Wildlife #Nature #Animals #Birds #AnimalFacts #impossibleplaces #naturalwonders #extremeplaces #travel #documentary #earth #4k #4ktraveldocumentary #4kdocumentary #TravelCipher