@misc{Orłowski_Grzegorz_Abandoned_2004,
 author={Orłowski, Grzegorz and Polska Akademia Nauk. Muzeum i Instytut Zoologii},
 editor={Museum and Institute of Zoology, Polish Academy of Sciences},
 copyright={Rights Reserved - Free Access},
 address={Warszawa},
 howpublished={online},
 year={2004},
 language={eng},
 abstract={The study was carried out on 94 abandoned arable fields (0.1-83.5 ha) comprising a total area of 400 ha in the intensively farmed region of the Wrocław plain (54.8 km2, SW Poland). A total of 101 Whinchat territories were found in the study area, all of them in abandoned crop fields with a well-developed layer of dried perennials from the previous year (Tanacetum vulgare, Artemisia vulgaris, Solidago sp.). Whinchats occupied 56 (60%) of the 94 fields surveyed. The probability of a Whinchat occupying a particular field was closely related to its size: the probability of occupation was 50% in fields of about 1.8 ha, and rose to 100% in fields larger than 13 ha. Single males occupied thirty-eight territories (37.6%). The number of Whinchat territories per occupied abandoned field lay between 1 and 14. Thirty-three fields held only a single Whinchat territory. The density of Whinchat territories was negatively correlated with the size of an abandoned field. Single males inhabited the smallest fields.},
 type={Text},
 title={Abandoned cropland as a habitat of the whinchat Saxicola rubetra in SW Poland},
 volume={39},
 number={1},
 journal={Acta Ornithologica},
 publisher={Museum & Institute of Zoology},
}