The gang leader

A good day to see birds. This is the list:
Anser anser, Anas platyrhynchos, Branta canadensis, Cygnus cygnus, Cygnus olor, Ardea cinerea, Accipiter gentilis, Accipiter nisus, Corvus corone, Larus argentatus, Vanellus vanellus, Dendrocopos major, Alauda arvensis, Sturnus vulgaris, Columba oenas, Turdus merula, Carduelis carduelis, Carduelis chloris, Carduelis spinus, Emberiza citrinella, Parus major, Parus ater, Parus caeruleus, Passer montanus.