Answer:
Has feathers but can't fly. Rests on legs but can't walk.
It is the electronic version of junk mail or a salty meat in a can.
There is a puzzle which can be asked all day with a different correct answer each time. What is the puzzle?
A precious stone, as clear as diamond. Seek it out while the sun's near the horizon. Though you can walk on water with its power, try to keep it, and it'll vanish in an hour.
What can be heard and caught but never seen?
Of these things - I have two. One for me - and one for you. And when you ask about the price, I simply smile and nod twice.