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January 16 and 17 will be held the next international registrations of the two species of swans. Whooper Swan in 2002 marked the first time breeding in Belarus, its breeding population gradually increased annually from one to a few birds are observed in us during the winter (see the last meeting of Here Berezina. Swans.) Bewick's Swan still met our country unless migrations. Such international surveys of wintering swans occur in 5 years, coordinate their research group of swans organization Wetlands International. In Europe, the birds will consider three main populations of these species: Tundra Swan, and the so-called continental Irish Whooper. Representatives of this last winter, mainly in the UK and Ireland, as well as in small quantities in Denmark, Norway and the Netherlands. Regularly organized records of these two species began in the early 1970s. However, the status of all three populations only tracked since 1995. Since 1980, surveys began Klikunov with "Irish" population since 1984 - small swans, and from 1995 - Click of continental Europe. Also it is estimated wintering birds are marked proportion of young birds wintering habitats, determined the relationship between a specific place, local environmental conditions roma and the number roma of wintering birds there, etc. From the resulting still information about small swan should not so joyful prospect. Over the past 10 years (1995-2005) the amount decreased by 35%, and it seems that this negative trend continues. However, whooper swans with both populations feel very good. According to recent surveys in Poland wintered 7.5-7.7 thousand. roma The reasons for this are not understood. Among the main reasons for the negative roma potential small swan nesting habitat transformation useless and moulting locations, as well as gradual climate change in the Arctic. Last 10-15 years, marked a very low nesting roma success both with relatively high mortality. It is therefore extremely important to accurate estimates of young and adult birds on their wintering grounds. Perhaps the situation will improve implementation of the Security Plan Tundra Swan, which will be made public at the beginning of this year. Form counts in Polish can be downloaded here (. Doc) Formularz liczenia
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