<abstract xmlns="http://www.w3.org/1999/xhtml">

The difference in habitat use by the observed waterbird species at Rački ribniki (Rače Ponds, NE Slovenia) was studied between June and August 2011. It was assessed that different waterbird species, even closely related species like <italic>Aythya</italic> ducks, use wetlands differently, with Tufted Ducks <italic>A. fuligula</italic> observed more on Open water and Ferruginous Ducks <italic>A. nyroca</italic> more often amongst Floating vegetation. The latter was used more often probably due to the abundance of food in the habitat. Highest species richness was recorded on Floating vegetation as well. This was reflected in species richness of individual ponds, where ponds with more floating vegetation had higher species richness. Although Coots <italic>Fulica atra</italic> were expected to utilize Floating vegetation more often due to their feeding preferences, they were observed more often on Open water probably feeding on fish fodder available there. The difference in habitat use by the families and nonbreeding individuals of the same species was noted, too, mostly by observing families in habitats that provide more cover from predators (Reeds), or more invertebrate food (Floating vegetation) for the young that often feed on different food than adults. Furthermore, it was suggested that overall management of wetlands should consider providing more suitable wetlands with larger aquatic vegetation cover.
</abstract>

Habitat use by waterbirds at Rački ribniki, NE Slovenia

<abstract xmlns="http://www.w3.org/1999/xhtml">

The population ecology of the Eurasian Bullfinch <italic>Pyrrhula pyrrhula</italic> is almost unknown in Iberia, where the subspecies <italic>iberiae</italic> lives. The present study provides a first approach to the population attributes of this subspecies in an area located in northern Spain, characterised by a landscape dominated by hedgerows and meadows. In particular, I analysed the population density, age distribution and sex ratio during a six-year period (2001–2006). By exploring the entire area, I estimated the density in each month, and distinguished males, females and juveniles. In winter, samplings by line transect were also used to obtain abundance indices to compare different days, months and years (1999−2005 period). Density values during the breeding season were similar between years, but winter abundances changed considerably at different temporal scales. A density peak was found in July–August, with the highest percentages of juvenile individuals occurring in August– September. Individuals clearly performing post-juvenile moult were seen during August–November. Sex ratio was markedly biased towards males throughout the year. Several biological and ecological characteristics of the Bullfinch, together with a favourable habitat and small changes of environmental conditions from year to year, seemingly promoted the relatively high stable breeding population densities estimated during the study period. The high variation in winter abundances was likely due to short-medium range movements. The high population density in late summer was a consequence of the addition of juveniles each year. The greater parental effort of females compared to males – since the former are responsible for most of the reproductive tasks and directly suffer considerable predation during incubation – was probably a root cause of the skewed sex ratio.
</abstract>

University Institute for Research in Sustainable Forest Management

Temporal variation in the population density and structure of the Eurasian Bullfinch <italic>Pyrrhula pyrrhula</italic> in the Iberian Peninsula

<abstract xmlns="http://www.w3.org/1999/xhtml">

The article presents a historical revision of data on the occurrence of the Cream-coloured Courser <italic>Cursorius cursor</italic> in Slovenia. A review of historical sources revealed that the species occurred in Slovenia at least three times after 1800, for the first time between 27 and 31 December 1847 in Šentvid near Ljubljana (specimen in the collection of the Slovenian Museum of Natural History, Ljubljana, Slovenia), for the second time in November 1892 near St. Janž (present day Starše) on the Drava plain (specimen in the collection of the Joanneum Museum, Graz, Austria) and last on 3 October 1976 at the Sečovlje salt pans (observation was not documented with preserved specimen or photograph). All three data have previously been published in various historical sources, but some were overlooked during the preparation of lists of Slovenian avifauna.
</abstract>

History of the Cream-coloured Courser <italic>Cursorius cursor</italic> occurrence in Slovenia

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Acrocephalus

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Acrocephalus

Volume 42 (2021): Issue 188-189 (December 2021)

Habitat use by waterbirds at Rački ribniki, NE Slovenia

Temporal variation in the population density and structure of the Eurasian Bullfinch Pyrrhula pyrrhula in the Iberian Peninsula

History of the Cream-coloured Courser Cursorius cursor occurrence in Slovenia

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