I would say you understand what I was trying to capture in my haiku: the contrast of the noisy crows with the silent hawk.
But there is also another level! In English, when you are talking about a "group" of crows, you call it a "murder" of crows (I do not know why... it is a very old expression). And that is why I used the expression "scream blue
murder" which simply means that they are making their "caw" noise very loudly, but it has a double meaning!
And when I talk about the hawk being "unruffled," it means that he is quiet, and not upset, and ignoring the noisy crows, but also that his feathers are not ruffled up. When hawks get upset, their feathers stand up away from their body. So, again, the word "unruffled" has two meanings!
I am a bird watcher, and this bird behavior, of many crows finding a hawk or an owl in a tree, and flying close by, making a lot of noise, is called "mobbing," and is very common behavior. When I am out bird watching, if I see twenty crows going crazy around a tree, for no reason, I always think to myself, "Perhaps there is a hawk or an owl in that tree!"