Krupa, Małgorzata ; Polska Akademia Nauk. Muzeum i Instytut Zoologii
Acta Ornithologica, vol. 39, no. 1 ; Pokarm piskląt piecuszka: różnice wynikające z wieku piskląt i płci ptaków przynoszących pokarm
Museum and Institute of Zoology, Polish Academy of Sciences
Bibliogr. p. 50-51 ; P. [45]-51 : ill. ; 27 cm ; Abstract. pol.
The study was conducted in the Lake Karaś reserve (N Poland), where the density of Willow Warblers in osier and birch thickets reached 28.7-33.3 p/10 ha. Collar rings were used to collect the food brought to the nestlings. 487 food samples were collected from 26 nests, comprising 2573 food items. 167 of the samples were from females (652 individual food items), 95 from males (616 food items). The nestlings were fed mainly on Arthropoda (94.6%) and Mollusca (5.4%). The dominant food items were Diptera (29.8%), Homoptera (28.7%), Ephemeroptera (10.5%), Araneida (7.6%) and Trichoptera (6.5%). The composition of the dominant food items and the average mass of food deliveries changed markedly with nestling growth. The types of food brought by each sex also varied significantly. Males brought heavier portions of food consisting of larger numbers of lighter prey. However, the composition of these portions was not as diverse as those brought by females. This may be related to differences between males and females in their respective territories and foraging techniques.
MiIZ PAN, call no. patrz sygn. czas. P.257-39-1 ; MiIZ PAN, call no. patrz sygn. czas. P.4568-39-1 ; click here to follow the link
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Museum and Institute of Zoology of the Polish Academy of Sciences
Library of the Museum and Institute of Zoology of the Polish Academy of Sciences
Oct 2, 2020
Jul 28, 2015
55
https://rcin.org.pl./publication/74044
Iwan, Dariusz Polska Akademia Nauk. Muzeum i Instytut Zoologii
Warchałowski Andrzej Polska Akademia Nauk. Muzeum i Instytut Zoologii
Burakowski, Bolesław Polska Akademia Nauk. Muzeum i Instytut Zoologii
Tomaszewska, K. Wioletta Polska Akademia Nauk. Muzeum i Instytut Zoologii
Hetmański, Tomasz Polska Akademia Nauk. Muzeum i Instytut Zoologii
Rutkowski, Robert Polska Akademia Nauk. Muzeum i Instytut Zoologii.
Milne, Rebecca J Polska Akademia Nauk. Muzeum i Instytut Zoologii
Tomiałojć, Ludwik (1939– ) Polska Akademia Nauk. Muzeum i Instytut Zoologii