Evolution real or memorex???

[Epidemic]

I am a firm believer of evolution...

That said, I do have some problems that need answering.

How does a lizzard become a bird. Feathers and wings would be a huge liability for a creature in the transition period from land to air.

I can understand how a bird will improve and refine over time tward the perfect bird. But going from an efficient runner and jumper to a flighted creature defies logic.

How does a mamal become a breast feading creature. during several thousand generations the ammount of milk would not be enough to sustain a baby whatever. Hmmmmmm!!!

Firstly. do lizards ever become birds?

I think related species evolve. A hog will not evolve into a steer (I'd be surprised if it did, though) but may evolve into a hogette.

Over such long extended periods of time, these things happen - like changes in geography. You can't imagine how slow, though.

Did I answer all you questions or still some unanswered ones?

[Epidemic]

The lizard to bird relationship has been established by the current dinosaur hunters.

But my point is that natural selection should have killed off the bird while it was in the transition period. Not flighted and not 4 legged anymore.

with mammals how does it transition from egg to live birth with food from mom. that one is a little easier but still questions.

[Warthog]

Man, I hope someday I wake up and I have wings...that would be "kewl".

You mean a parakeet's ancestors were a T-Rex? Hard to believe.

About the killed off bird not flighty any more, I think maybe there were two "trails"- one evolution where the parakeet evolved into a T-Rex and another where he remained a parakeet or just turned to a parrot or some other stuff.

NOW, is your question answered or you want me to dig deeper?

[nomaxim]

About 30 million years ago there were some birds living in S. America that were between 10 and 12 feet tall. They were hunters! In fact the beak on a newly found speciman was 2 feet 7 inches long and was shaped somewhat like a keets.
Need I say that this BIRD could easily remove your head in one quick nip.

By the way ALL of recorded human history only extends back 5,000 yrs. and our oldest known relative is only 3 million yrs. old!

P.S. The dinosaurs died out 65 million yrs. ago.

[NeoStarO1]

with mammals how does it transition from egg to live birth with food from mom. that one is a little easier but still questions.

Of the mamals, they don't lay eggs, they mate and the babies are inside the animal till birth and therefore are able to nurse just as humans females can nurse thier young. mamals are the same way.

Epi, you're thinking of it in the wrong light. It's not a matter of how the bird-lizards weren't extinguished by natural selection, it's a matter of how come a flightful, yet skillful running and jumping little beast kept evolving into something that could only fly. Environment plays a huge role in evolution. The air is the safest place to be when your not as far up the food chain as we are. You've got a bunch of bigger lizards chasing around this smaller lizard that could leap and glide maybe, but eventually they figured out that staying in the air was a better way to live. Hence your lizard turned into a bird. Can we even really say they were lizards? Lizards are cold blooded reptiles by definition aren't they? If dinosaurs were warm blooded, do they need a new classification? With that line or reasoning, their skin was probably more like an elephants, thick and hair, somewhat scaley even. But who knows, there are many theories there will never be answers for (until I finish my time machine).

-Whir

[nomaxim]

Not all mammals do this.

Marsupial young live in the womb and leave to mature in a pouch.

[nomaxim]

Whir is correct here.

One leading theory for our own bipedilism is that we needed to get above the tall grass to see if any predators were near.

This trait allowed those that saw the predator first to head for the trees.

Hence the term 'leopard lunch' refering to slow early primates.

Those without this trait did not make it!