What are the differences between fish and birds?

Fish

Have scales, live in the water, are cold blooded, have a diet of smaller organisms or algae, depending on the species, have a different life span, have a different body type, and can swim.

Birds

Have feathers, live in trees and forests (most, some like penguins don't), are warm-blooded, have a diet of insects and grain or fish (depending on the species), have a different life span, have a different body type, and can fly (most can, some swim, some walk).

Fish Attributes / Bird Attributes

Cold-blooded / Warm-blooded

Most swim underwater / Most fly in the air

They have scales and fins / Most have wings with feathers

They can breathe underwater / They have lungs