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EN
During 1966-2009, in 13 seasons, breeding avifauna were counted in Prince J. Poniatowski Park (Łódź). The increase of species richness from 25 (1966) to 35 species (2009) was observed. The species started to breed in the Park were: Mallard Anas plathyrynchos, Sparrowhawk Accipiter nisus, Coot Fulica alra, Wood Pigeon Columba palumbus, Thrush Nightingale Luscinia luscinia, Song Thrush Turdus philom elos, Nuthatch Sitta europaea, Hawfinch Coccothraustes coccothrausles, Goldfinch Carduelis carduelis, Serin Serrinus serinus. Some species disappeared as breeder: Cuckoo Cuculus canorus, Pied Wagtail Molacilla alba, Wood Warbler Phylloscopus sibilatrix, Willow Warbler Phylloscopus trochilus, Marsh Tit Poecile palustris. The significant increase of breeding pairs was observed for: Blackbird Turdus merula. Blackcap Sylvia atricapilla, Great Tit Parus major. Blue Tit Cyanistes caeivleus, Finch Fringilla coelebs.
EN
The evaluation was conducted using the bird species richness and occurrence of the key species. The key species were: 1. Species endangered globally according to IU CN/BirdLife International criteria, 2. Species of European Conservation Concern (C ategory 1-3), 3. Species from Annex I of Council Directive on the Convention of Wild Birds (79/409/EEC) 4. Species from Polish Red Animal Book, 5. Species which frequency of occurrence in Poland is < 10% according to Atlas of Breeding Birds in Poland data, 6 . Species which number of Polish breeding population is less than 1000 pairs. The key species breed in all kinds of habitats in Łódź. The most valuable habitats are weakly urbanized areas of river valleys and forest habitats with old tree-stands. Among the habitats the most endangered by changes are: river valleys and farmland areas.
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