Atheism is unreasonable

[Mister Agenda]

Cut the bio-babble and tell me when has the reptile-bird change ever been observed? I mean, it isn't as if there is a thousand differences between the two. Please tell me how that could have ever occured, sir.

By 'bio-babble' you seem to mean 'scientific explanation of biological phenomena'. It's like kryptonite to people who depend on their ignorance to maintain their opinions regarding biology.

Never. Birds are not derived from reptiles, they're derived from dinosaurs. Mammals derived from reptiles, and there is an exquisite series of fossils demonstrating every important step of the process, including how part of the jawbone of reptiles became mammalian ear-bones.

As far as how birds evolved from dinosaurs, a thousand differences can accumulate over millions of generations. In the fossil record we have discovered over forty dinosaurs with direct evidence of feathers and precursors that give a good illustration of how feathers evolved from scales, a feathered dinosaur (Microraptor) that almost certainly at least glided if not flew outright, and later, Anchiornis with large wings with flight feathers and smaller 'hind wings' than Microraptor (Microraptors legs were feathered in a way similar to wings, so it would have used all four limbs to glide). Anchiornis has more avian wrists than Microraptor, and long legs that make it resemble a Road Runner with teeth and a long tail.

Evolution explains why we find a gradation of fossils from dinosaur to birds in the fossil record, why birds do not precede dinosaurs, why only dinosaurs and birds have feathers, and why we won't find bird fossils earlier than the Jurassic period. They can't exist before their precursors evolved. Creationism doesn't explain any of that, and a bird in the Cretaceous would send evolutionary biologists back to the drawing board scratching their head because an important prediction of evolution will have been falsified.

Interestingly, birds and crocodiles are the only surviving clades of the superclade Archosauria. Birds are in the clade Avemetatarsalia, which includes dinosaurs and pterosaurs which are all more closely related to birds than to crocodiles.