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Charakterystyka wybranych parametrów populacyjnych bociana białego (Ciconia ciconia) w środkowej Polsce
On the basis of the so far collected and/or published data on the White Stork of central Poland (the Łódź Upland) the authors undertook an attempt to explain the spatial and tem poral distribution of breeding efficiency, ...
Bocian bialy (Ciconia ciconia) na Ziemi Łowickiej
(Wydawnictwo Uniwersytetu Łódzkiego, 1992)
Having analysed materials collected in the Łowicz District in 1968 1970, 1974, 1975, 1983 and 1984 the author proved the occurrence of a continuous increase in the number of nests which were not occupied by pairs and ...