@misc{Zieliński_Piotr_Feeding_1999,
 author={Zieliński, Piotr and Wojciechowski, Zbigniew},
 editor={Polska Akademia Nauk. Muzeum i Instytut Zoologii},
 copyright={Rights Reserved - Free Access},
 address={Warszawa},
 howpublished={online},
 year={1999},
 language={eng},
 language={pol},
 abstract={The study was carried out in central Poland (52°15'N, 19°25'E) by all-day visual observation of five nests of Barn Swallows feeding their nestlings. Feeding frequency of older (age of 14-20 days) nestlings changed significantly with time of the day and was highest (46 visits/h) before noon, declining in the afternoon (21 visits/h) and after a slight increase during the early evening (25 visits/h) declining again in late evening. Feeding frequency of younger (age of 6 days) nestlings did not showed significant changes in the day cycle (average 20 visits/h). The proportion of midday feedings increased with nestling age while the proportion of evening feedings.},
 type={Text},
 title={Feeding frequency in the barn swallow Hirundo rustica in relation to time of the day},
 URL={http://rcin.org.pl/Content/45205/PDF/WA058_61078_P257-T34_Acta-Ornith-Nr-1-10.pdf},
 volume={34},
 number={1},
 journal={Acta Ornithologica},
 publisher={Muzeum i Instytut Zoologii PAN},
 keywords={Barn Swallow, cubs, feeding, Poland, Łódź Voivodeship, nesting, behaviour, breeding ecology, swallows, birds, Hirundo rustica, Hirundinidae, Aves, 1979},
}