1000r Giveaway.

That doesn't answer the original question of how to get the bird out.

I just hope we're dealing with a real solid hollow sphere and a real living, bone and flesh bird, and not some kind of illustration on the glass, because I don't like double meaning riddles.

Paint an outside scenery on the glass, then the bird will believe it's outside.

the bird is a mirage when ur lookin at a glass orb?

the same way you put it in

The sphere is solid and hollow. The bird is alive.

lol i believe rilibi

ask danny phantom to do it

That answer makes no sense.

But to put it in you had to melt the glass to seal it. That would be damaging it. I can't imagine any way to put it in without damaging the glass.

The bird has to be outside the sphere.

mirrors are made of glass, simply highly polished, this was stating the bird was a reflection

the glass is flexable and has a small hole to open it with

How I got it in the glass is, in some ways, the key to the riddle.

The glass is solid.

Put an empty orb next to bird and the bird will be outside that orb.

Use a proyector, put the glass with the bird in front of it, and point it to a cloud or a wall outside. That way the protected image of the bird will appear to be outside.

even google does not know this

is it something to do with science

As stated before the bird has to actually be outside.