The Smallest Bird you have ever seen

By accident I got hold of two of the smallest eggs I have ever seen.
Should I incubate them?
Would I be able to raise a baby bird that would hatch from it?

The little bird is called a Wren. In my country it is the second smallest bird species there is.

It hatched so fast that I missed it.
The feeding was hard with my big human hands and very time-consuming. It took me about 80 feeding rounds per day to keep him healthy.
But in the end it worked.