climate change is affecting the population and distribution of birds in the uk, according to the State of uk 's Birds 2004 released in August. While the numbers of some of the most endangered birds, such as the bittern, capercaillie, nightjar and corncrake, show an encouraging trend, some of the more secure species continue to decline alarmingly.

uk populations of wintering ducks, geese, swans and wading birds have declined to their lowest level in the last 10 years. Seven of the nine common species of wading birds have shifted from