Water birds with lamellar beaks, belonging to the duck family, are divided into ducks for practical reasons, Swans, geese and loaches. The largest representative of the Thracian group, which are found all over the north of Europe, Asia and the American continent, there is a merganser. Like other species belonging to the same genus, The Merganser fish feeder mainly feeds on small fish, which he catches long and narrow, the stylus is the ending beak with edges dotted with small sharp serrations. All sea trout are excellent divers, even in streams and swift rivers they fish with ease, they can travel considerable distances under water, swim against the tide. They especially like the northern ones, surrounded by forests, lakes with transparent water, which ensure good visibility, necessary for catching prey. The female trachea does not build a nest. In May or June it folds 7 do 12 eggs in a rotten tree trunk and incubates them alone by 30 days.
Long-billed Slab (Mergus serrator), related species, it does not search for tree trunks to establish a nest. His female folds 6 do 12 brown-olive eggs in a nest carefully hidden in the coastal vegetation. The smews-saw (Mergus albellus) creates nests in a hollow, sometimes at high altitude. He also does not despise the wooden nesting basket set up by foresters and hunters. The female covers the bottom of the basket with her own fluff. The eggs are often laid in the same place as the screamer, then one of the two females incubates common eggs.
Merganser Snakeskin differs from a duck in the shape of its beak and a more or less distinct tip. There is a clear sexual dimorphism in the color of the plumage. Male mergansers weighs 1300-1800 g. His head is dark green, without a clear tip (1). The female is lighter than the male by approx 400 g, has a more pronounced tip of the same color as the neck (2). The male and female beaks are red.
Long-billed Slab is smaller. The male's body weight ranges from 900 do 1400 g. His green head is adorned with a beautiful one, clearly visible tip. She has a white necklace around her brown neck (3).
The smews-saw it is the smallest of the European thurses. The mating plumage of the male is immaculately white, except for the black stripe on the head, black marks on the back and black tips of the remiges (4). On the fly drawing: Merganser (5), longbill (6) and sackweed (7). Protected species.