I read this poem not long ago, and I think that excerpt means that the caged bird cant go anywhere, all his freedom is gone except for one thing, and that is singing. He sings because that is the only thing he can do that he is tied down to the cage.
Answer:
Literally, it means that it is snowing.
Metaphorically, it could mean that something delicate looking yet sturdy has been moved and positions in a situation have changed.
Answer:
<em>'He is the same colour </em><em>as </em><em>the earth, and a great deal less interesting to look at.'</em>
Explanation:
George Orwell uses Simile, a figurative language device that compares two things using the adverbs like or as.
When describing the people working on the land he refers to them as the unvisible part of a (beautiful) visible landscape. This is a very subtle way of critisizing the British Empire that ignores (they don´t see them) the working people who, seen by Orwell, are doing important work.