Kuvikvédelem egy közép-magyarországi mezőgazdasági területen: költési adatok és a mesterséges fészekodvak paramétereinek összefüggései

Hámori, Dániel

doi:10.17243/mavk.2017.187

Cited by 3 publications

(5 citation statements)

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“…Traditionally it breeds in the lowlands, but for the above mentioned reasons nowadays it breeds mainly in anthropogenic environments, like on the loft of farmland houses, agricultural buildings and abandoned old houses (Hámori 2016(Hámori , 2017. Because of the lack of studies, the size of the Hungarian population is not exactly known (Šálek et al 2013), but it is likely to be higher than the data reported in the literature (Magyar et al 1998, Schmidt 1998, Hadarics & Zalai 2008.…”

Section: Introductionmentioning

confidence: 99%

The status and population changes of the Little Owl(Athene noctua)in the south of Békés county (Hungary)

Bozó

Csathó²

2017

Ornis Hungarica

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Between 1995 and 2017 we carried out surveys on the Little Owl (Athene noctua) in Battonya town and Kevermes village in southern Békés county. In 2007 and 2017 we have surveyed nesting sites in the village and the outer areas of Kevermes. The population of the species was estimated at the beginning of the breeding season and in early summer with field observations. Between 1995 and 2017 we collected road-kill data within the entire administrative area of Battonya. We registered each fiund road-killed Little Owl. We found 64 road-kills in Battonya. The number of casualties of the species has increased unambiguously over the studied 23 years. Most of the road-killed Little Owls (53 individuals, 82.81% of the total) were found in summer (June–August). 51 road-killed individuals (79.69%) were noted in the outer areas of Battonya, and 13 specimens (20.31%) in the town. Our results highlight that vehicle traffic is an important mortality factor for the population. The Little Owl has a large population in this landscape, and the population size has increased over the last decade. In the background of this increase is most likely the rise in the number of abandoned houses because of the unfavourable economic and social situation in the region. The local pairs nested only on attics and roof structures in Kevermes, often in residential buildings. The buildings of modern agriculture do not meet the needs of the species. A large part of the population breeds in the village, because with the disappearance of the farms the breeding pairs of the outer areas of Kevermes have disappeared. However, in Battonya the species regularly breeds in the outer areas of the town. Finally, we also collected some ethnoecological data on how local people relate to the species.

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Section: Introductionmentioning

confidence: 99%

The status and population changes of the Little Owl(Athene noctua)in the south of Békés county (Hungary)

Bozó

Csathó²

2017

Ornis Hungarica

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“…The high diversity of the Upper Kiskunság Puszta is mainly due to the mosaic habitat structure, the dense network of livestock farms and the high proportion of grasslands managed by traditional extensive methods. Here, half of the nest boxes (N = 6) were located in Juhászföld and Ürbőpuszta belonging to the outer region of Bugyi city, which had high breeding outputs compared to other nets boxes between 2012 and 2016 with 4.63 successfully fledged owlets per nest box (Hámori 2017a). This also demonstrates that the area provides excellent habitat conditions for the Little Owls.…”

Section: Discussionmentioning

confidence: 74%

“…Detailed studies on feeding biology are also essential in Central Europe to support nature conservation strategies. In Hungary, Little Owl feeding data are mostly pre-millenial or based on small number samples (Greschik 1911, 1924, Marián & Schmidt 1968, Molnár 1984, Andrési & Sódor 1986, Endes 1990, and only in some cases seasonal or fully processed (Lanszki 2006, Hámori et al 2017a. In this respect, the Little Owl is one of the least studied owls in Hungary.…”

Section: Introductionmentioning

confidence: 99%

Little Owl’s (Athene noctua) vertebrate food composition during breeding season with high frog dominance in grasslands

2019

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The aim of our study was to investigate the feeding of the Little Owl (Athene noctua) during the breeding period in three protected sites (Upper Kiskunság Puszta, Upper Kiskunság Lakes, Peszéradacs Meadows) in an extensively managed lowland plain area (Upper Kiskunság) of the Carpathian Basin. A further objective was to provide a detailed assessment of the vertebrate prey spectrum and dominance structure based on the analyses of pellets. Little Owl pellets were collected in September 2015 and 2016 from 20 artificial nest boxes in which successful breeding occurred in both years. Mean pellet number was calculated per individuals. Distribution of individual number and biomass of vertebrate prey taxa were also examined. The number of collected and dissected owl pellets was 2,094 in 2015 and 2,024 in 2016, respectively. The average rate of pellet regurgitation was 25.57 pellets/ind. in 2015, and 27.74 pellets/ind. in 2016. From the 40 samples (4,118 owl pellets) a total of 2,017 vertebrate preys were determined. Cumulative species richness was 21, including 12 mammalian, 1 amphibian, 4 reptile and 4 bird species. Mammals were dominant in the food (average 50.83%), and the consumption of amphibians was similar (48.06%). The consumption of birds and reptiles was not significant. Amphibians were represented by a single species, the Common Spadefoot (Pelobates fuscus) in remarkably high proportions among the prey items, followed by the Common Vole (Microtus arvalis) by approx. 37% proportion. The high proportion of the latter two species was also clearly reflected in the biomass amounts. Among the birds, the Starling (Sturnus vulgaris) proved to be the most commonly predated species apart from other species closely related to farmland habitats (Motacilla alba, M. flava, Passer montanus).

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“…Our study area is part of the Hungarian Plain, with large, extensively grazed grasslands. Therefore, we hypothesise that loss of suitable feeding habitats is not a significant threatening factor considering the local Little Owl population, contrary to other regions throughout Europe and even in Hungary (Gorman 1995, Hadarics & Zalai 2008, Van Nieuwenhuyse et al 2008, Framis et al 2011, BirdLife International 2016, Šálek et al 2016, Hámori 2017a. Accordingly, it is the amount of available nesting sites which limits the population, forming a serious obstacle towards further population growth.…”

Section: Discussionmentioning

confidence: 89%

“…Typical nesting sites are the lofts of farm-houses and barns (Schmidt 1998). The estimated size of the Hungarian Little Owl population is approximately 1,500-4,000 breeding pairs, and the population tendencies are considered to be negative (Gorman 1995, Hadarics & Zalai 2008, BirdLife International 2016, Hámori 2017a. The main threatening factors are: a) the lack of proper nesting sites as modern buildings are less sufficient for breeding (Orbán 1985), b) the significant increase in the abundance of the Beech Marten (Martes foina), which is one of the main predators of the Little Owl (Kalotás 1987), c) the indirect effect of rodenticides, d) the abandonment of pastures, e) increased mortality of juveniles by suffocation in drinking Unauthenticated Download Date | 5/13/18 4:48 AM troughs (Génot 1991) and by f) falling in chimneys and other unescapable places (Clech 1993, Zvářal 2002.…”

Section: Introductionmentioning

confidence: 99%

Demographic data on the Little Owl(Athene noctua)in Upper-Kiskunság (Hungary)

2017

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This study focused on the clutch size and age-specific apparent survival rate of the Little Owl (Athene noctua) population in Upper-Kiskunság, Hungary. Between May 2005 and April 2017, 640 individuals were captured and ringed in a total of 746 capture-recapture occasions. Artificial nest boxes were installed in the study area, breeding birds and pulli were captured for ringing/recaptured in these boxes (from March to May), or at the close neighbourhood of those (max. 168 m). Jolly-Seber's open population method was applied to model the survival rate. The candidate model set included models incorporating age, year-effect, and the combination of those. AICc value was used to compare models in a selection approach. The final model was constructed via model averaging based on the models with significant explanatory power. The average number and SD of pullus/breeding pair was 3.78 ± 0.76. The average apparent annual survival rate (which does not differentiate between mortality and permanent emigration) for the period between pullus stage and the time of the first breeding was estimated as 9.47% ± 2.99% SE, whereas the annual survival rate of adults was 82.74% ± 8.46% SE. The effect of sex on the survival rate of adults was not investigated due to female-biased sample, as the probability of capturing females is significantly higher in late spring months. Our experience reveals that during February and March it is possible to capture both sexes in the nest boxes, and it does not influence negatively the breeding success. Based on our results, the population of the Little Owl is stable in Upper-Kiskunság. A slight increase in estimated population size is observable even if we make no difference between mortality and permanent emigration. The high occupancy rate of the installed nest boxes reveals that nest site availability is an important limiting factor in the studied population.Keywords: owl conservation, ringing data, age specific survival rates, Strigiformes, Hungary Összefoglalás Vizsgálatainkkal a kuvik (Athene noctua) felső-kiskunsági populációjára jellemző átlagos fészek-alj-méretet, valamint a korspecifikus, éves túlélési rátákat kívántuk meghatározni. A 2005 májusa és 2017 áp-rilisa közötti időszakban a Felső-Kiskunságban 640 egyedet fogtunk meg, a visszafogásokkal együtt összesen 746 alkalommal. A madarak fémgyűrűvel történő jelölése és visszafogásaik első sorban a vizsgálati területre kihelyezett mesterséges kuvikodúkban (március-június), vagy azok 168 méteren belüli környezetében történtek. A fogás-visszafogási adatokat nyílt populációs Jolly-Seber módszerrel elemeztük, az alternatív modellekben az egyedek túlélését magyarázó tényezőként a korcsoportot, az évhatást, valamint ezek kombinációját szerepeltettük. A modellek összehasonlítására az AICc értékeket használtuk, a szignifikáns magyarázóerővel bíró alternatív modellek átlagolásával állítottuk elő a végleges modellt, illetve annak paraméter értékeit. A vizsgált populá-cióban az átlagos fészekalj-méret 3,78 ± 0,76 SD fióka/fészek volt. Az átlag...

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Kuvikvédelem egy közép-magyarországi mezőgazdasági területen: költési adatok és a mesterséges fészekodvak paramétereinek összefüggései

Cited by 3 publications

References 16 publications

The status and population changes of the Little Owl(Athene noctua)in the south of Békés county (Hungary)

The status and population changes of the Little Owl(Athene noctua)in the south of Békés county (Hungary)

Little Owl’s (Athene noctua) vertebrate food composition during breeding season with high frog dominance in grasslands

Demographic data on the Little Owl(Athene noctua)in Upper-Kiskunság (Hungary)

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