Birds are representatives of the whole nature. They are easily noticeable and observed. Thus, the condition of various bird species reflects the state of the whole ecosystem. This is why in Natura 2000 Network habitats of birds play such a vital role. more »
At the end of summer a careful observer may notice grown-up ducks or geese without feathers. Should one help such birds or leave them alone? Read why and how birds change their plumage in "Birds change their plumage at the end of summer".
A sedge warbler, before it sets out on its autumn journey, accumulates a lot of fat and doubles its weight up to 20 grams. It loses all the extra fat before it arrives at its destination.