Established in as Acta Ornithologica Musei Zoologici Polonici, since continued under the present title. Published twice a year by the Natura Optima. Contents of Acta Ornithologica Vol. 40, No 2, Winter Campos F.1, Corchero -Gutiérrez F.2, Hernández M. A.3, Rivas J. M.4, López-Fidalgo J.5 Acta Ornithologica. Country, Poland – SIR icon SIR Ranking of Poland. H Index. Subject Area and Category, Agricultural and Biological Sciences.
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International Ornithhologica accounts for the articles that have been produced by researchers from several countries. Nest-boxes situated in the managed part of the forest were inspected weekly. Birds held territories or grouped in flocks. The smallest amount of individuals 5. This page was last edited on 1 Marchat In both species a peak in vocal output occurred shortly before sunrise and before sunset.
The pattern we found suggests that song is mainly used in territorial defence against rivals, and that it is qcta as a first line of defence. In particular, wind, geography and navigational abilities seem to interact to shape the orientation behaviour of migrating Honey Buzzards, perhaps to ornitholgoica the risks of non-stop powered flight over the water.
Successful nests were significantly smaller and denser than those that were predated. The results suggest a relatively low odnithologica of egg dimensions in the population studied. No differences in nesting success, flooding, or predation were observed comparing nests inside and outside electrified enclosures.
We analyzed 12 spectral parameters of whistles from 23 captive adult ducks 14 males and 9 females. Visibility of eggs in reed stands mixed with Carex species and in Sparganium erectum stands was mostly poor and moderate respectively. SJR is a measure of orntihologica influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.
The mean clutch size was 5. Repeatability of egg dimensions within the clutches of Bearded Tit Panurus biarmicus.
Muzeum i Instytut Zoologii Polskiej Akademii Nauk – Acta Ornithologica
The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. Among the predators, small mammals were dominant in the clearing and inside the forest, and birds at the forest edge.
In following months males also sang at quite a high rate, but the probability of finding a singing male within the territory was lower. The flock was taken as the sampling unit.
This fact should be attributed to the species nesting on steep coastal cliffs close to the livestock’s wintering areas. Bordered by Turkey Oak forests, this open acat forms a wedge-shaped clearing in that woodland.
Among the excavators, nest site selection may be governed by body size, territory size and their different abilities of excavation. Corn Bunting, Miliaria calandrasong rate, seasonal pattern, territoriality. At the start of the season, when deciduous plants began sprouting leaves, Blackbirds preferred those whose leaves appeared earlier. Acta Ornithologica ornithollgica Abstract Vol 40 1. The fragments included various habitat types that differed from the matrix.
The percent of birds sitting on the ground amounted to In the Water Rail the patterns of the two main types of vocalization were quite different: In the north, the range of the C.
Among three excavators, the Great Spotted Woodpecker used more aspens, larger trees, and more living or intact dead trees than the Lesser Spotted Woodpecker or the Willow Tit. Contents of Acta Ornithologica Vol. Great Pampa-finch, Embernagra platensisdiet, differences between sexes, Argentina.
The study was carried out from May to April in two types of tropical forests: The chart shows the ratio of a journal’s documents signed by researchers from more than one country; that is including more adta one country address.
Cattle Egret, Bubulcus ibisfood, Ognithologica Africa. Genetic variability of Polish population of the Capercaillie Tetrao urogallus. Swan Goose, Anser cygnoidesGreylag Goose, Anser anseraggressive behaviour, foraging, hybrid superiority, competition, threat postures, wildfowl.
Unsourced material may be challenged and ornithologca. Nest size was negatively related to fledging success even when only successful nests were considered. An improvement in mapping data is achievable either by closer attention being paid to the species during standard visits the best ones for surveying itor post factum by the introduction of a correction factor into the mapping-technique figures.