Question

What does the poet mean by black bird sings the latest

Answer 1

Explanation:

Think about it, its a black bird, in the dead of night. In the darkest of night, there's a blackbird, you're not going to notice it, everything is black. The bird is crying for help, which is what they mean by singing. It's in some kind of distress or is generally sad, but nobody notices it or cares.