. "RIV/60460709:41330/09:25498" . "Journal of Ornithology" . . "Z\u00E1rybnick\u00E1, Mark\u00E9ta" . . "RIV/60460709:41330/09:25498!RIV10-MSM-41330___" . "Sedl\u00E1\u010Dek, Ond\u0159ej" . . . . . . "Do Tengmalm\u00B4s Owls alter parental feeding effort under varying conditions of main prey availability?" . "Korpim\u00E4ki, Erkki" . . . "7"^^ . "[EE079A9C34F5]" . "150" . "1" . "We studied the diet composition and behavioural responses to variable food conditions in Tengmalm\u00B4s Owls. The abundances of main prey (voles and mice) of owls were higher in the Ore Mts., Czech Republic, than in the Kauhava region, Finland. We monitored nests continuously by a camera system to estimate the feeding frequency and to identify prey items provided to nestlings. We recorded 990 prey deliveries at six nests in the Ore Mts. and 1679 prey deliveries at nine nests in the Kauhava region. Mice (Apodemus) and voles (Microtus and Clethrionomys) were the main foods of owls in the Ore Mts., whereas voles (Clethrionomys and Microtus) and shrews (Sorex) were the main foods in the Kauhava region. In consequence, on average smaller prey items were brought to nestlings at the Finnish site. However, both absolute and relative (per one nestling) feeding frequency was higher in the Kauhava region and the biomass available to individual nestlings did not differ between the two areas."@en . . "Do Tengmalm\u00B4s Owls alter parental feeding effort under varying conditions of main prey availability?"@en . "3"^^ . . . "P(LC06073), S, Z(MSM0021620828)" . . "We studied the diet composition and behavioural responses to variable food conditions in Tengmalm\u00B4s Owls. The abundances of main prey (voles and mice) of owls were higher in the Ore Mts., Czech Republic, than in the Kauhava region, Finland. We monitored nests continuously by a camera system to estimate the feeding frequency and to identify prey items provided to nestlings. We recorded 990 prey deliveries at six nests in the Ore Mts. and 1679 prey deliveries at nine nests in the Kauhava region. Mice (Apodemus) and voles (Microtus and Clethrionomys) were the main foods of owls in the Ore Mts., whereas voles (Clethrionomys and Microtus) and shrews (Sorex) were the main foods in the Kauhava region. In consequence, on average smaller prey items were brought to nestlings at the Finnish site. However, both absolute and relative (per one nestling) feeding frequency was higher in the Kauhava region and the biomass available to individual nestlings did not differ between the two areas." . "1"^^ . "41330" . "DE - Spolkov\u00E1 republika N\u011Bmecko" . . "Do Tengmalm\u00B4s Owls alter parental feeding effort under varying conditions of main prey availability?"@en . . "311035" . "Aegolius funereus, feeding frequency, diet, parental effort"@en . . . "Do Tengmalm\u00B4s Owls alter parental feeding effort under varying conditions of main prey availability?" . . "0021-8375" .