ACTA ORNITHOLOGICA PDF

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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Acta Ornithologica[Journal] – NLM Catalog Result

Pairs of young birds started nesting 2—3 months later than adult ornithooogica. We encourage you to reciprocate by sharing your submission experience. The selective penetration of such trees by predators probably reduces the frequency of nest building in them between the first pentads 1—3 and second pentads 4—6 period of the breeding season, despite the fact that they provide better concealment for nests.

The timing varied greatly between seasons. We suggest that variation in nest size and composition may be due to several contradictory pressures associated with the need to keep the moisture and temperature in the nest relatively constant, to protect the brood from predation, and to control sanitary standards.

ACTA ORNITHOLOGICA

However, nest size has not been found to be related to predation probability within any species. Song activity peaked at the beginning of the breeding season, in late March and April. The Capercaillie is one of the most seriously endangered bird species in Poland.

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This article about a zoology journal is a stub. Views Read Edit View history. SJR is a measure of scientific 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 study was carried out in 3 plots in the province of Punjab Pakistan in November The paper discusses the extent to which such results can reflect the influence of weather conditions on passage, or else a precise internal physiological and genetic mechanism responsible for the timing of migration.

An average parasitised nestling was supplied by its parents with 2.

Significant changes in the diet composition occurred, with parasite-free nestlings being consistently fed with fewer caterpillars. Avian Ecophysiology Unit, Dept. Estimates of several species’ breeding populations in ornithologixa cities were used to calculate their densities in the total area of breeding habitat in each city used by the species in question. BoxValdivia, Chile.

Accuracy and efficiency of different techniques for censusing territorial Middle Spotted Woodpeckers Dendrocopos medius. The purpose of the research was to find a time frame for the beginning, duration of maximum intensity, and end of irnithologica bird migration. In a few cases, factors such as the geographic ornithopogica of a species, the attitude of humans in the case of the Feral Pigeonand specific, slight variations in habitat are put forward to explain the differences found.

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Flycatchers breeding in natural holes started laying eggs on average two days later 15 May and laid smaller clutches 6. By using this site, you agree to the Terms of Use and Privacy Policy.

In addition, the Bird Sanctuary is like an oasis in the desert environs of Eilat. This seems to be related to their hybrid origin, since Greylag Geese most often show diagonal neck and forward threat displays. Mortality was high on tree-lined sections of road in adverse weather conditions. Common Buzzard, Buteo buteopopulation trends, density. Wilson Journal of Ornithology.

However, the three-visit method with audio-stimulation was 2. We analyzed 12 spectral parameters of whistles from 23 captive adult ducks 14 males and 9 females.

Acta Ornithologica

Unsourced material may be challenged and removed. The shorter period of nest use in conifers is probably due to their selective penetration by corvids. Juveniles had longer wings in orbithologica than in spring, but no differences were recorded in the adults in this respect. Both polygynous males were recorded in ; this ornlthologica unusual, because flooding in early June around the hatching date destroyed most of the broods.

The types of food brought by each sex also varied significantly.