Rattling Around

So somebody said to me, that gene frequency stuff is just microevolution... there's no evidence for macroevolution. Oh yeah? Seen any dinosaurs lately? Extinction is one of the processes of macroevolution. Or don't you believe in dinos? (OK, I'll admit no human has seen a live dinosaur... yet.) But there are extinctions that have occurred in recent times. There used to be so many passenger pigeons that the weight of roosting birds would break limbs on trees. Now they are extinct, along with the funny-looking dodo. The last passenger pigeon (named Martha) died in 1914 at the Cincinnati Zoo. Today, there are species going extinct each year, especially in some of the richest ecosystems, like tropical forests, which have such huge habitat destruction going on.