Barnacle goose were of the same nature as other birds. The question of the nature of barnacle geese also came up as a matter of Jewish dietary law in the Halakha, and Rabbeinu Tam (1100–71) determined that they were kosher (even if born of trees) and should be slaughtered following the normal prescriptions for birds. The mythical barnacle tree, believed in the Middle Ages to have barnacles that opened to reveal geese, may have a similar origin to the other legends already mentioned. Barnacle goose The barnacle goose ("Branta leucopsis") belongs to the genus "Branta" of black geese, which contains species with
Red-breasted goose 2013, the Bulgarian court had overturned a decision which prohibited an energy wind project from continuing their work in an important winter site for the threatened red-breasted geese. The construction of wind turbines in the area not only threaten the geese by being an obstacle that they fly into. The area they are being constructed in will also deprive red-breasted geese of a critical feeding ground. As of now, an appeal had been sent to court to convince the court otherwise. Red-breasted goose The red-breasted goose ("Branta ruficollis") is a brightly marked species of goose in the genus "Branta" from