2min chapter

In Our Time: Science cover image

Linnaeus

In Our Time: Science

CHAPTER

The Evolution of Birds

The Blackback Gold, Herring Gold and the other goals of the North Atlantic are described as different species. But in fact, in some circumstances, they can hybridize together. In that particular case, you've got a remarkable situation where we have a bird called the lesser Blackback Gold in Britain, and then we go around the North Pole. The adjacent species of golds around the North pole can actually hybridize with each other to some extent, so they're not really species. So what shows you evolution in action? As they were moving around the Northpole, as the ice retreated, they were changing, evolving and adapting. When they closed the circle, the two at the extreme

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