I'm too tired right now to read the entire essay, just wanted to point out that Hooded Crows are definitely not exclusive to Sicily. They can be found in most of Europe and the Middle East.
Not sure what you mean by "stalk", that's not an official English name of any species AFAIK. Also "heron" is not a species but a family, therefore it's best used as a plural (herons) without the definite article in this context (unless you want to point out a particular species; there are several in the region).
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