Tichodroma 25 (2013):

Pôvodné práce
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  • Jarčuška B.: Hniezdenie kúdelníčky lužnej (Remiz pendulinus) na smrekovci


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Variabilita v zakládání, délce inkubace a velkosti snůšek motáka lužního (Circus pygargus) v jižní oblasti České republiky

Variation in the start of breeding, clutch size and the incubation length of Montagu’s Harrier (Circus pygargus) in the South of the Czech Republic


Ivan Kunstmüller


Žižkov II/1279, 580 01 Havlíčkův Brod, Česká republika; e-mail: pygargus@seznam.cz


Abstract. The breeding ecology of the Montagu’s Harrier has been studied in the Southern Czech Republic from 2003 to 2011. This study focuses on variation in the start of breeding, clutch size and the length of incubation with respect to weather conditions and type of breeding habitat. First clutches were detected from the first half of May and laying continued until the end of June with the average start of laying being May 24 (n = 187 nests). The average clutch size was found to be 4.1 eggs (n = 276 clutches). Most frequent clutch size (44.2% of 276 clutches) contained four eggs. Most of 306 nests were located in natural or unmanaged habitats – wetlands and ruderal meadows (43.2%), and winter wheat fields (36.6%). The average laying date seemed not to be different among years. The latest clutch was detected in 2004 on June 27. The clutches initiated after June 1st were considered as replacement clutches. The average period between the initiation of the first and the last clutches was 39 days, ranging from 27 days in 2008 to 43 days in 2004. Individual eggs were not always laid in two-day intervals. Clutch size was not probably linked with the length of incubation of the first-laid eggs. The incubation length of the first clutches ranged from 27 to 34 days (average 31 days, n = 187 clutches).


Key words: Montagus Harrier, breeding ecology, Czech Republic


Hnízdní ekologie motáka lužního (Circus pygargus) v závislosti na hnízdním prostředí

Effect of nesting environment on breeding ecology of Montagus Harrier (Circus pygargus)


Ivan Kunstmüller


Žižkov II/1279, 580 01 Havlíčkův Brod, Česká republika; e-mail: pygargus@seznam.cz


Abstract. In 2002–2012, breeding population of Montagu’s Harrier was regularly monitored in region of Vysočina in the southern part of the Czech Republic (n = 342). This work deals with the breeding ecology of this species in relation to nesting environment: i) natural habitats (waterlogged and marshy grasslands, ruderal abandoned vegetation), ii) cereals, iii) forage crops. Most nests were built in natural habitats (47.1%), cereals (38.9%) and minimum in perennial forage crops (14.0%). Clutch size ranged from 2 to 7 eggs in all the habitats (median was 4). The nesting environment had a statistically significant effect on nest success. The most successful nests were in cereals – 63.9%, minimum in forage crops – 41.7%. Nest environment type had not a statistically significant effect on the number of eggs in successful nests nor the number of hatched chicks in these nests. The number of fledglings, however, differed between the nesting environments. Most fledglings were in nests in cereals (mean number = 3.65), minimum in forage crops (2.85).


Key words: Montagu’s Harrier, breeding ecology, nesting environment, Czech Republic

Pokles početnosti kuvika obyčajného (Athene noctua) v Lučenskej kotline (južné Slovensko)

Decrease in abundance of Little Owl (Athene noctua) in Lučenská kotlina Basin (S Slovakia)

Marian Mojžiš & Dušan Kerestúr


Školská 211, 985 31 Mučín, Slovensko; e-mail: m.mojzis76@gmail.com; Tolstého 17, 984 03 Lučenec, Slovensko; chocatabras@gmail.com


Abstract. The Little Owl abundance was monitored and compared in Lučenská kotlina Basin (S Slovakia) between two periods (1999–2000 and 2011–2012). The survey on Little Owl was carried out using nocturnal playback of male’s territorial calls, in combination with daily control of a site. About 66 % decline in abundance of Little Owl was observed in the area between the two periods, ranging from 13–16 pairs (0.31–0.38 pair/10 km2) to 4–6 pairs (0.10–0.14 pair/10 km2). Possible reasons of observed decline are discussed in the paper.


Key words: Athene noctua, abundance, population decline

Vodné a na vodu viazané vtáctvo vodnej nádrže Môťová po 25 rokoch

Waterbirds of water reservoir Môťová (C Slovakia) after 25 years



Ústav ekológie lesa SAV, Ľ. Štúra 2, 960 53 Zvolen, Slovensko; e-mail: kristin@savzv.sk


Abstract. Forty-five water bird species, of them only 5 breeding species, were registered at water reservoir Môťová near the city of Zvolen during 44 visits from October 2011 to June 2013. The most abundant species were Anas platyrhynchos (86%) and Anas crecca (6.1%). The most frequent species were A. platyrhynchos, Ardea cinerea, A. crecca, Phalacrocorax carbo, Podiceps cristatus and Cygnus olor. After 25 years, when similar study was conducted (i.e. 1987–1989), we found increase in the total number of registered water bird species (55%; i.e. from 29 to 45) and more than twice higher mean number of individuals per visit (from 124 on 289). Observed trend might be explained by overall positive population trend known in several fish-eating species (e.g. P. carbo, A. cinerea, Egretta alba, Mergus merganser) and habitat generalists (e.g. A. platyrhynchos, C. olor, A. strepera). The most important differences in abundance between the two periods were found in A. platyrhynchos (N = 7943 individuals/ 67 visits in 1987–1989, and N = 10918 ind./44 visits in 2011–2013), what is the change from 118 on 248 ind./ visit. However, in this species we found similar maximum abundances (up to 1050 ind.), from late November to early December, in both periods. Altogether, 113 bird species (50 breeding, 30 hospites and 33 permigrants) were registered at the water reservoir from 2011 to 2013.


Key words: waterfowl, mallard, faunology, population trends

Hniezdna ornitocenóza vŕbovo-topoľového lesa inundačného územia Dunaja pred a po zmene vodného režimu

Breeding bird assemblage of willow-poplar forest in Danubian flood plains before and after water regime change


Mirko Bohuš

Katedra environmentálnej ekológie, Univerzita Komenského v Bratislave, Prírodovedecká fakulta, Mlynská dolina, 842 15 Bratislava, e-mail: bohus@fns.uniba.sk


Abstract. Breeding bird assemblage of forest stands of association Salici-Populetum in years 2010, 2011 and 2013 was compared with assemblages of the same stands before the Danube water regime had been changed and site was swamped (y. 1991), and with the period proximately after the change, when site was drained (1993–1997). Using the mapping method, altogether 34 breeding species were registered (mean ± SE = 30.3 ± 2.9). Mean density during the entire period was 132 territories/ 10ha, H´=2.89, equitability=0.81. In 1993–1997, the same number of breeding species was found, but the mean number of species per year was lower (27.4 ± 2.3). In 1991, in total 22 breeding species were found with density of 97 territories/ 10 ha. After the water regime changed in 1992, Acrocephalus scirpaceus disappeared therewith, Phoenicurus phoenicurus decreased up to local extinction in 1997. In 2010, 2011 and 2013, three species – Columba palumbus, Poecile palustris and Emberiza citrinella have appeared. Using cluster analysis, three clusters were grouped among all assemblages: assemblages of y. 1994–1997(at dissimilarity level 0.120) formed an „early after-drain“ cluster; assemblages of period 2010, 2011, 2013 (at dissimilarity level 0.239) formed a „late after-drain“ cluster and assemlages of y. 1991 and 1993 (at dissimilarity level 0.180) formed mixed „swamp/immediately after-drain“ cluster. Both clusters, representing period 1994–2013, are clustered together at dissimilarity level 0.360. This cluster joined with the „swamp/immediately after-drain“ cluster at dissimilarity level 0.449.


Key words: breeding bird assemblages, riparian forest, changed water regime, Danube

Hniezdenie kúdelníčky lužnej (Remiz pendulinus) na smrekovci

Nesting of Eurasian Penduline-tit (Remiz pendulinus) in a larch tree




Ústav ekológie lesa Slovenskej akadémie vied, Ľ. Štúra 2, 960 53 Zvolen, Slovensko; e-mail: benjamin.jarcuska@gmail.com


Abstract. A nest of Eurasian Penduline-tit (Remiz pendulinus) was found in European larch (Larix decidua) tree, 6 m above ground. The tree was located 50 m far from the river within a group of trees and shrubs surrounded by abandoned pasture. This should be the first known nesting of the species in larch tree.


Key words: unusual nest location, Eurasian Penduline-tit, European larch

Červený zoznam vtákov Slovenska

Red list of birds in Slovakia


Miroslav DEMKO, Anton KRIŠTÍN & Peter PUCHALA


SOS/BirdLife Slovensko, Mlynské nivy 41, 821 09 Bratislava, Slovensko; demko@vtaky.sk 

Ústav ekológie lesa SAV Zvolen, Ľ. Štúra 2, 960 53 Zvolen, Slovensko; kristin@savzv.sk

ŠOP SR, Správa CHKO Malé Karpaty, Štúrova 115, 900 01 Modra, peter.puchala@sopsr.sk


Abstract. All breeding species of Slovak Avifauna (226 species) were evaluated against the IUCN criteria 2001, version 3.1,. for the first time. The main period for the assessment was 2002−2012. Altogether 15 species (Mergus merganser, Tadorna tadorna, Phalacrocorax pygmeus, Ardeola ralloides, Grus grus, Charadrius alexandrinus, Larus canus, Larus argentatus, Sternula albifrons, Chlidonias leucopterus, Calandrella brachydactyla, Motacilla citreola, Turdus iliacus, Acrocephalus paludicola, Pastor roseus) were not eligible for the assessment (category NA not applicable) because of their accidental breeding in Slovakia. Altogether 79 bird species (37% of assessed 211 Slovak breeders) were included in the Slovak Red List (categories RE - regionally extinct, CR critically endangered, EN endangered, VU vulnerable and NT near threatened). Threatened birds (categories CR, EN, VU; 51 species) cover 24% of all assessed Slovak breeders. Out of them four species are RE, 10 CR, 24 EN and 17 VU. Further 24 species (11% of assessed Slovak breeders) are classified as NT. The rest 132 species (63% of assessed Slovak breeders) did not meet any IUCN criteria, and they were evaluated as least concern (LC) and they were not included in the Red List. Out of 211 species assessed, all globally threatened species (three species) and all species which met IUCN criteria on the European level (10 species) are included in the Red List now.   


Key words:  bird conservation, IUCN, regional Red List, threats, biodiversity, threatened birds


Prehľad krúžkovania vtákov na Slovensku v roku 2012

Bird-ringing results in Slovakia in 2012




ŠOP SR, Správa CHKO Ponitrie, Dlhá 3, 971 01 Prievidza, Slovensko; vladimir.slobodnik@sopsr.sk; Katedra ekológie a environmentalistiky, Fakulta prírodných vied UKF, Tr. Andreja Hlinku 1, 949 74 Nitra, Slovensko


Abstract. In 2012, 69 members of Slovak Ornithological Society/BirdLife Slovakia ringed altogether 57,560 birds, of them 4831 were nestlings (8.4 %). The ringed birds belonged to 166 species. The most numerous ringed species were Great Tit (Parus major, 6637 individuals), Barn Swallow (Hirundo rustica, 6272 ind.), Blackcap (Sylvia atricapilla, 6156 ind.), European Robin (Erithacus rubecula, 3383 ind.), Blue Tit (Cyanistes caeruleus, 2557 ind.) and Common Chiffchaff (Phylloscopus collybita, 2240 ind.). Lists of ten most frequently ringed passerines and ten non-passerines are given. The most frequently ringed young are also discussed. Results of 10 individuals re-trapped in Slovakia and ringed abroad as well as 10 individuals ringed in Slovakia and re-trapped abroad are given.


Key words: bird ringing, reports of ringed birds, recoveries

13. správa Faunistickej komisie Slovenskej ornitologickej spoločnosti/BirdLife Slovensko

The 13th report of the Rarities Committee of the Slovak Ornithological Society/BirdLife Slovakia


Richard KVETKO & FK SOS BirdLife Slovensko

SNP 14, 903 01 Senec, Slovensko; richard.kvetko@centrum.sk


Abstract. In 2012, the Rarities Committee of the Slovak Ornithological Society/BirdLife Slovakia reviewed 58 records, of which 43 were accepted in category A, 6 records in category C, 3 in category D, one record in category E and one breeding record. Three records were rejected. The first record of Black-winged Kite (Elanus caeruleus) and the first record of Levant Sparrowhawk (Accipiter brevipes) were the highlights of the year2012. Other remarkable accepted records from the years 2010, 2011 and 2012 were: one sighting of Tundra Swan (Cygnus columbianus)  in 2012, four records of Red-breasted Goose (Branta ruficollis)  in 2011/2012, two records of Great Northern Loon (Gavia immer)  in 2010 and 2011, two records of Griffon Vulture (Gyps fulvus)  in 2012, one sighting (1strecord since 1946) of  Cinereous Vulture (Aegypius monachus) in 2012, one record in 2011 and three records in 2012 of Black-legged Kittiwake (Rissa tridactyla), two records of Sandwich Tern (Sterna sandvicensis), one record of Rufous-tailed Rock Thrush (Monticola saxatilis) in 2012, one record of Baikal Teal  (Anas formosa) in 2012 and one breeding record of Common Merganser (Mergus merganser) in 2012.


Key words: rarities committee, rarities report, Slovakia

Ornitologické pozorovania

Recenzia: Dunne P., Sibley D., Sutton C. 2012: Hawks in Flight. Second Edition. — Houghton Mifflin Harcourt Company, New York


Miroslav ČAPEK


Ústav biologie obratlovců AV ČR, v. v. i., Brno, Česká republika; capek@ivb.cz

Kronika (Branislav Matoušek)

© SOS/BirdLife Slovensko (2009–2013)