If birds come from Dino why don't they have a bigger brain?

Question

If you are 250 million years old, you would think they would have a bigger brain.

Answer 1

Because dinosaurs had very small brains themselves.

Answer 2

All of those prehistoric animals didn't have very big brains.  Insects, birds, sharks, trilobytes; intelligence was never their niche, that was our (primates) niche.

Answer 3

their heads would explode.

Answer 4

just because dinosaurs is fairly large creatures doesn't mean that they have big brains.some,like the stegosaurous,have a small brain that's the size of a nut.

so birds definitely got their brains...

i hope i helped!

Answer 5

not everything automatically gets a bigger brain the longer it's around..

finish elementary school.. then we'll talk

Answer 6

They don't need one.  Our brains take up a significant amount of the energy our bodies produce from food.  If you don't need a large brain to survive, then it doesn't make sense to evolve one.

Answer 7

Size doesn't matter with Brain. As big as our brain, you only use 20% of it and the rest is not used (or not known what it does).

Answer 8

This whole question is ridiculous.  Really?????