Losing my bird's nest

[shermoen]

I'm suspect my bird's nest is probably a goner at this point but thought I would get some opinions. It started losing tissue just at the tips and now the tissue loss is all over. If you look closely the base is black as well, but it's pretty hard to see in this picture. 

 Ive looked into this already and can find no definitive answer. All other corals in my tank are doing great it just this one. 

 Is this STN?

[mcarroll]

I wouldn't say it's a goner, but it doesn't look happy.   How long has it been so "cozy" with all those softies?