Macbeth 2.3 Performance: Lennox, Lines 50-57a

The transcript describes a scene of destruction and chaos, with chimneys blown down and strange lamentations heard in the air. It speaks of prophecies foretelling dire events and combustion, and mentions an obscure bird clamoring through the night. The earth is described as feverish and shaking, adding to the sense of confusion and turmoil.

What does the phrase 'the obscure bird clamoured to the live long night' suggest about the atmosphere?

What might the 'feverish' earth symbolize in the context of the text?