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Anserini
Most of these (with the black heads) are Canada Geese, however those without the black heads look like Greylag Geese, Anser anser. You may wish to crop these out and make them as another separate spotting. By the way, Anserini is not a Scientific name as such, it is a tribe name. The scientific name consists of Genus + species only, although sub-species may be included if they are positively known.