What does a crow on a skull tattoo mean?

To me it means a few things combined. The crow represents the bird that was forgotten. A sense of failure, like in the old testiment when Noah sent out a raven and it never returned failing its test, while the dove succeeded and has been long remembered. The skull represents death, whether it be a near death experience or a struggle, or a loved one lost. I have that tattooed with roses underneath to represent the hope you can have by overcoming your struggles. I battled through thoughts of suicide and my tattoo of the crow on top of the skull with roses is a reminder that though I've struggled with thoughts of suicide and failed so many times there's always hope for the ones who have had it rough.