Interesting. I like the descriptive nature of the poem and your use of the colours red and blue, along with the metaphor of the ravens. I also like the feelings portrayed in these lines:

"Feel that sudden and longed-for
release.  Something I understand, but do not
savour."

How the feelings"longing for release/do not savour" are almost in opposition to one another. Though the most important part of those lines, to me, seem to be the words "Something I understand", which brings a whole other depth to the line as a whole and relays the complexity of the feeling in a very direct way. The only way for my to explain what I mean is that with that line you describe a complex set of emotions in a simple and powerful way and that isn't easy to do.

The last part I really enjoyed:

"Perhaps I feel nothing when I feel the
bite.  Ravens will still pick at their

feet; my elder bones.  Their
wings take off.  My tomorrow brings new
survival."

seems to tell me that you can't escape the nature of yourself, especially when it comes to thinking about the past - "Ravens will still pick at their feet; my elder bones" - I think is a great way to describe that part of our nature. I also like that you used the raven metaphor and the final word "survival" to end your poem. It speaks volumes and really becomes the thing you take with you from reading the poem. That there's hope, there's a tomorrow, there's life and survival and that is a great way to end it. Kudos