High-altitude birds evolved thicker 'jackets' Post a Comment Himalayan songbirds in colder, more elevated environments have feathers with more fluffy down. Baca JugaPoorer nations 'more focused on sustainability''Quick fixes' to the climate crisis risk harming natureIn pictures: Solar eclipse as seen from the UK Read More Share : You may like these posts :Moon Landing: 'Wow, it worked!'Painted lady butterfly influx needs people to count themIsrael mosque find: Archaeologists unearth 1,200-year-old ruins in desertApollo 11: 'I helped the world watch Moon landing' Post a Comment for "High-altitude birds evolved thicker 'jackets'"
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