Answer:
Break me and I am better immediately set and harder to be broken again.
I am the black child of a white father a wingless bird flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me even though there is no cause for grief and at once on my birth I am dissolved into air.
I am the home for feathery animals.
What is so fragile that saying its name breaks it?
I am commonly abbreviated to H
When is it bad luck to see a black cat?