Podiceps cristatus
46-51 cm, sexes similar. Grey upper part, whitish beneath, while in its nuptial plumage it reveals obvious tufts on the head and below the eyes. Present throughout the year, it nests in the final part of the river Stella and Cormor and in flooded quarries in the hinterland. Non-reproductive groups can be observed at sea, in lagoons and in the deepest parts of valli da pesca (fishing reserves).