[FlameOn]

So I have a large weeping birch (~2 stories tall) in my front yard and it looks like it's not doing so well. Either disease, bugs, or something else seems to have killed most of it in the winter and barely any branches on the tree look like alive at this point.

Anyone have recommendations for a tree whisperer to coax this thing back from the brink or barring that remove the tree and grind down the stump at a reasonable price? How long does it usually take for a semi dead tree to become a hazard from something like root rot or falling branches?