Tichodroma 19 (2007) Pôvodné práce
Potrava krkavca čierneho (Corvus corax) na Slovensku Food of the Raven (Corvus corax) in Slovakia Ján OBUCH Botanická záhrada Univerzity Komenského, 038 15 Blatnica, Slovensko; obuch@rec.uniba.sk The food was studied with using analysis of pellets from breeding and roosting places of the Raven. The frequency of anorganic, anthropic, vegetable and animal components has been evaluated from 19 samples with 20, or 30 pellets. The samples were evaluated in the following separate groups: lowlands, basin and mountains. Abundance of animal species in fresh pellets manifests a higher diversity in the lowland samples, while samples from basins and mountains are dominated by Microtus arvalis. Long-term accumulation of Raven food remnants was found in rocks where these birds breed or roost. In such sites the animal food component is distinguished by a great species diversity. Some animals were brought to these sites by birds from a distance of 10 km or more. The problem of the Raven as a pest for the game (and hunting) is discussed, too. Hniezdenie krakle belasej (Coracias garrulus) na juhozápadnom Slovensku v rokoch 2001–2006 Breeding of the European Roller (Coracias garrulus) in south-west Slovakia during 2001–2006 Mirko BOHUŠ Katedra ekosozológie a fyziotaktiky, Prírodovedecká fakulta UK, Mlynská dolina, 842 15, Bratislava, Slovensko; bohus@fns.uniba.sk Altogether 17 breedings were recorded (four in 2001, two in 2002 and 2003, four in 2004, three in 2005, two in 2006). Since 2002, in 13 cases, there were nine successful breedings. Number of fledgelings per a successful nest varied between 2 and 5 (mean = 3.7, ±SD = 1). The egg predation was the most important factor of unsuccessful breeding (4 cases). Cavities after the Picus sp. were used most frequently (n = 8), less that ones after Dryocopus martius (5) and the nest-boxes (4). Repeated breeding in the same hollows or the nest-box was confirmed. In a single nest-box used in three successive seasons, the same female bred in 2004 and 2006; probably also in 2005. Repeated breeding of the same male was highly probable, too. Dutinové hniezdiče (Dendrocopos medius, Ficedula parva a Ficedula albicollis) a ponuka hniezdnych možností v Chránenom vtáčom území Malé Karpaty Hole breeding species (Dendrocopos medius, Ficedula parva and Ficedula albicollis) and supply of breeding possibilities in the Special Protecion Area Malé Karpaty Peter PUCHALA ŠOP SR, Správa CHKO Malé Karpaty, Štúrova 115, 900 01 Modra, Slovensko; peter.puchala@sopsr.sk Three hole breeding species (Dendrocopos medius, Ficedula parva, Ficedula albicollis) were studied with the point census method in the Special Protection Area Malé Karpaty. Occurence of these species was studied at 14 transects situated in oak, oak-beech and beech forest stands. The density of Middle Spotted Woodpecker reached 0.9 pairs/ 10 ha at transect Lindava. The density of Red Breasted Flycatcher reached at one transect (beech stands – Hajdúky) 0.5 pairs/ 10 ha. The density of Collared Flycatcher reached from 2.1 to 3.9 pairs/ 10 ha on transects. In 6 transects the density of hollow trees was studied, as well. The highest number of cavities was found in the old oak forest Lindava (19 hole trees/ 1 ha) and in the old beech forest Roštún (14 hole trees/ 1 ha). Both these transects were situated in nature reserves. In managed forest, there were found from 6 to 8 hole trees/ 1 ha. Zmeny v hniezdnych zoskupeniach vtákov mladých dubových porastov po 10 rokoch Changes in breeding bird assemblages of young oak forests after 10 years Peter LEŠO Katedra ochrany lesa a poľovníctva, Lesnícka fakulta TU vo Zvolene, Masarykova 20, 960 53 Zvolen, Slovensko; leso@vsld.tuzvo.sk Breeding bird assemblages of two oak forest stands in phase of pole-stage were compared based on the results obtained in 1996–1998. In comparison with the previous period, the mean stand height increased by 4 m, mean tree thickness by 6 cm and all reserved trees were removed. The structure of breeding bird assemblages on the two study plots has not markedly changed. Conditions for nesting of some hole-nesters have disappeared, owing to reserve trees removed in recent years. The natural holes and semi-holes has been emerging in the current pole-stage, which conditioned breeding of a relative high number of tits, and the total density of hole-nesters has not changed in comparison with the previous period. The canopy-nesters density has increased owing to a considerably higher abundance of Fringilla coelebs. The increasing species number, diversity and density is presumed in the next years towards the forest rotation age. Obsazenost ptačích budek v zimním a jarním období Occupancy of nest-boxes in winter and spring seasons Karel ZVÁŘAL Dukelská 3980, 760 01 Zlín, Česko; karel.zvaral@tiscali.cz Nest-boxes occupancy was studied in winters 2003/2004–2006/2007 and in springs 2004–2006. The monitored locality is situated northward of Zlín (Czech Republic) and eight lines of boxes for passerines have been placed in a mixed forest at a height of 1.5–2 m. Occupancy in winter was relatively high: 2003/2004 – 77.9%, 2004/2005 – 73%, 2005/2006 – 41.6%, 2006/2007 – 67.5%(mean 65.4%, max. occurrence 100%). Parus major occupied 65.9% of boxes. Sitta europea occupied 29.9% of boxes and the occupancy decreased apparently due to a disturbance (from 51.7% in 2004 to 13.9% in 2007). Parus caeruleus occupied 3.6%, Dendrocopos major 0.6% of boxes in winter. Occupancy of boxes in spring: in 2004 was 90.3%, in 2005 was 92.6%, in 2006 was 91.4%. Dominant breeder was P. major which occupied 66.6% of boxes. Sitta europaea bred in 9.5%, P. caeruleus bred in 8.5%, Ficedula albicollis in 4.3%, Parus sp. in 3.2%. After the long snowy winter 2006, there were ascertained +2Y (Y = years old) birds (23% of P. major and 15.3% of S. europaea) and +3Y birds (3.2% of S. europaea). In the warm and snow less winter 2007, there were ascertained +2Y birds (45.5% of P. major and 26.7% of S. europaea), +3Y birds (16.1% of P. major and 6.9% of S. europaea), +4Y birds (1.5% of P. major and 7.9% of S. europaea). Spoločenstvo vtákov v hniezdnom období na ornitologickom stacionári Drienovec – použitie metodiky CES Bird nesting community of the Drienovec Bird Ringing Station – CES programme Milan OLEKŠÁK, Peter PJENČÁK, Miroslav FULÍN & Štefan MATIS Ždiar 166, 059 55, Slovensko; milan.oleksak@sopsr.sk; Sídlisko Okulka 7/1, 093 01 Vranov nad Topľou, Slovensko; pjencak@stonline.sk; Východoslovenské múzeum, Hviezdoslavova 3, 041 36 Košice, Slovensko; fulin@zoznam.sk; ŠOP SR, Správa NP Slovenský kras, Biely kaštieľ, 049 51 Brzotín, Slovensko; stefan.matis@sopsr.sk The methodology of the CES programme was used at the Drienovec Bird Ringing Station for the first time in 2006. Altogether 174 m of nets were installed and used consistently in the same locations; basic methodology rules for bird catching/ringing were established. In addition, the habitats of the involved wetland area were described, with focus on areas adjacent to nets installations. During the nesting season (May 3 – July 28), 1288 individuals were caught, representing 38 bird species. On average 143 new individuals were ringed during 9 visits. Forest species, e.g. Sylvia atricapilla, Erithacus rubecula, Coccothraustes coccothraustes, Turdus merula, Fringilla coelebs and Parus major were dominant. In May only adult birds came across; at the beginning of June some juveniles were caught and they gradually started dominating catch samples. Not all the caught species were considered nesting in the area. Several tropical migrants were captured during May, as well as species from the hospites group. Vtáctvo Arboréta Borová hora (stredné Slovensko) Birds of Arboretum Borová hora (Central Slovakia) Vladimír JEŽOVIČ & Anton KRIŠTÍN Arborétum Borová hora TU vo Zvolene, Borovianska cesta 2171/61, 960 53 Zvolen, Slovensko; jezovic@vsld.tuzvo.sk; Ústav ekológie lesa SAV, Štúrova 2, 960 53 Zvolen, Slovensko; kristin@savzv.sk Birds of Arboretum Borová hora (48 ha) in Zvolen (Central Slovakia) were studied using the transect method in 2001–2007, combined with mapping of breeding territories in breeding periods (2006–2007). There were found altogether118 bird species, 71 of them breeding, 16 hospites and 31 permigrants. For 71 breeding species was their total density estimated to 543 pairs (nearly 100 pairs/ 10ha). As dominant, there were found mainly the forest species: Fringilla coelebs (38 pairs/ 48ha), Turdus philomelos (37), Turdus merula (36), Sylvia atricapilla (30), Parus major (20), Erithacus rubecula and Phylloscopus collybita (each 16), Parus caeruleus (15)and Coccothraustes coccothraustes (14). The breeding species Picus viridis and Picus canus confirm the high quality of habitats in the Arboretum. Furthermore, there were found some species representing riparian forests (Luscinia megarhynchos, Locustella fluviatilis, Acrocephalus palustris, Oriolus oriolus), parks (trushes, Hippolais icterina, Muscicapa striata), many species of broad-leaved forests, but also conifers in mountains (Parus cristatus, Regulus regulus, Pyrrhula pyrrhula). The maximum number of breeding species (37) was found with a density of 97 pairs in small remnants of riparian forest (3 ha). The purest habitat of the five investigated was meadows with 28 species (density 97 pairs/ 16 ha). In comparison with the census 25 years ago, there were found by 17% more species in total and 29% more breeding species. The cause of these differences can be explained by different age and succession of growths, as well as different stage of knowledge of the regional avifauna. Kvalita a kvantita ornitocenózy vilovej štvrte Bratislavy v rokoch 2000–2006 Quality and quantity of a bird community in the residential district of Bratislava during the years 2000–2006 Zora FERIANCOVÁ-MASÁROVÁ Staroturský chodník 3, 811 01, Bratislava, Slovensko The study area between Bôrik and Bratislava Castle (5 ha) is characterized by typical residential architecture. The green area, especially numerous coniferous trees (mainly spruces), a lot of them more than 70 years old, is of great importance for the bird community. The bird species, their numbers and behaviour were monitored and recorded by direct observation nearly daily in 1979–2006. Altogether 80 bird species were found, 18 of them were residents (indigeni homocoeni), 15 remained in the area and also in Slovakia during the warm period of the year (indigeni heterocoeni), 29 species visited the area for food or roosting (hospites). One of the species was a winter guest, and it was flying over the area from the fields for the food and back (alieni) and 17 species were flying over the area accidentally or stayed there for some limited period of time (vicini). The affinity of the species to the habitat, breeding or other type of presence, number of pairs (minimum and maximum), or individuals within the area, relative abundance and dominance (eudominant, dominant, subdominant, recedent) were analysed there. In breeding species, there were compared the minimum and maximum numbers of pairs during three periods (1979–1992, 1996–1999 and the last 2000–2006). In the same area, there were used the same methods, and the results of ornithology research gained in 25 years could be compared. Selekcia hniezdneho habitatu strnádky ciavej (Emberiza cia) v Národnom parku Slovenský kras Breeding habitat selection in the Rock Bunting (Emberiza cia) in the National Park Slovenský kras Radovan VÁCLAV & Pavol PROKOP Ústav zoológie SAV, Dúbravská cesta 9, 845 06 Bratislava, Slovensko; radovan.vaclav@savba.sk Breeding territories were determined based on regular counts of singing male Rock Buntings between April – July in 2003–2006. During the study period, 21–25 breeding territories per 16 ha per year were detected. Most of the breeding territories were defended during all the study years. In total, there were determined 34 unique breeding territories and 20 habitat patches interspersed between them. These patches were not defended by males during any of the study years. Ten habitat parameters were measured for both breeding and non-breeding habitat patches. The chance that a patch within a suitable habitat would be selected was significantly determined by the bush and stone cover, and by horizontal surface complexity (ditch density). Specifically, Rock Buntings in the study area selected for breeding patches showing relatively lower bush cover, relatively higher stone cover, and higher horizontal surface complexity. Breeding habitat selection in Slovakia was discussed taking into account the results reported for other populations of the species. The biological reasoning behind the habitat selection pattern in Rock Buntings was presented, and suggestions for habitat management were proposed. Hniezdenie a výskyty hadiara krátkoprstého (Circaetus gallicus) na východnom Slovensku Breeding and occurrence of the Short-toed Eagle (Circaetus gallicus) in Eastern Slovakia Štefan DANKO, Jozef MIHÓK & Štefan PČOLA Jána Švermu 1, 071 01 Michalovce, Slovensko; danko@gecom.sk; Buzulucká 23, 040 00 Košice, Slovensko; mihok@centrum.sk; ŠOP SR, Správa NP Poloniny, Mieru 193, 067 61 Stakčín, Slovensko; pcola@sopsr.sk The species is today the rarest bird of prey in Slovakia. Up to 1976, breeding was known only from Slovenský kras (2 pairs). In 1976, the breeding was confirmed also in the Volovské vrchy Mts. (1 pair), in 1977 in Vihorlat and in 1986 in Zemplínske vrchy Mts. (1 pair). The breeding of two another pairs was found in following years in Vihorlat Mts. and the third pair hunted there, but bred in Ukraine. In the paper we summarized all known breeding data, but also all published and unpublished data on occurrence and probable breeding from E Slovakia. Probable breeding over the 20th century was supposed: 1–2 pairs Bukovské vrchy Mts., 1 pair Čergov, 1–2 pairs Laborecká vrchovina hills, 1 pair Ondavská vrchovina hills, 3 pairs Slanské vrchy Mts., 2 pairs Slovenský kras, 1 pair Vihorlat ans 1 pair Volovské vrchy Mts. Hence, altogether 18–20 breeding pairs were known in E Slovakia. Another data mentioned in the paper were probably about foraging territories. The number of breeding pairs started to decresase from year 2000, and in 2006 only one breeding pair was known. Lost of suitable hunting habitats (deserted pastures and non-mowed meadows resulted in secondary succession) seems to be one of the main expected reasons of this negative population trend. Data on breeding biology and ecology are discussed. Three nearest nests were located at distances of 12 and 12 km. Egg laying most often started towards April, 20 but it was found also one month later. The nests were located on oak (8), beech (5), black locust and fir (each 4), pine (3), hornbeam and spruce (each 2) and once on lime tree. The nests were used mostly once, but in one case repeatedly in seven successive years. The nests were built together by male and female. The young fledged at the end of August or at the beginning of September. Within 1976–2006 authors registered altogether 27 fledged young. Some pairs did not breed in some years. In the food were found Anguis fragilis (10), Natrix natrix (5), Natrix sp., Elaphe longissima and unidentified snakes (3), Coronella austriaca (1), Vipera berus (1), Lacerta viridis (1) and Bufo bufo (1). Hniezdenie haje tmavej (Milvus migrans) na východnom Slovensku Breeding of the Black Kite (Milvus migrans) in Eastern Slovakia Štefan DANKO, Jozef MIHÓK, Ján LIPTÁK, Štefan PČOLA & Miloš BALLA Jána Švermu 1, 071 01 Michalovce, Slovensko; danko@gecom.sk; Buzulucká 23, 040 00 Košice, Slovensko; mihok@centrum.sk; Lomnická 44, 040 01 Košice, Slovensko; ŠOP SR, Správa NP Poloniny, Mieru 193, 067 61 Stakčín, Slovensko; pcola@sopsr.sk; ŠOP SR, Správa CHKO Latorica, M. R. Štefánika 1555, 076 16 Trebišov, Slovensko; milos.balla@sopsr.sk Altogether 14 confirmed and 20 probable breeding sites of the Black Kite were found in seven orographic units in E Slovakia (Čergov, Košická kotlina, Ondavská vrchovina, Slanské vrchy, Slovenský kras, Šarišská vrchovina and Východoslovenská rovina) up to the end of 1964. Between 1964 and 1990, there were found 31 confirmed and another 15 probable breeding sites in 10 orographic units (almost in Beskydské predhorie, Bukovské vrchy, Čierna hora, Laborecká vrchovina, Vihorlatské vrchy and Východoslovenská pahorkatina). The E Slovakian population of the Black Kite bred not only in lowlands but also in mountains up to 760 m. This species became extinct in Slovenský kras in the 60th of the last century and its abundance mainly decreased during 1980–1990 and since 1990 the Black Kite has been breeding only in Východoslovenská rovina – in riparian forests along the Latorica, Laborec and Bodrog rivers (6 confirmed pairs and 1–2 probable pairs). Phenology of migration, food, breeding sites and breeding biology and ecology are discussed, too. Hniezdenie orla malého (Hieraaetus pennatus) na východnom Slovensku v 20. storočí Breeding of the Booted Eagle (Hieraaetus pennatus) in Eastern Slovakia in the 20th century Štefan DANKO & Jozef MIHÓK Jána Švermu 1, 071 01 Michalovce, Slovensko; danko@gecom.sk; Buzulucká 23, 040 00 Košice, Slovensko; mihok@centrum.sk Breeding of the Booted Eagle in Slovakia was documented only in eastern part of the country (Slanské vrchy Mts. and Vihorlatské vrchy Mts.) from 1964 up to 1991. Most probably, the species also bred in Slovenský kras. In Slanské vrchy Mts. it bred in 1964–1989 (southern and central part of area). The longest breeding period of 2–3 pairs was recorded in Bogota area (Slanské vrchy Mts.) over 1973–1989. Since 1991, only single individuals were rarely observed in Eastern Slovakia, the last one in 1998. In 60s and 70s of the 20th century, we estimated all population sizes as 8–10 breeding pairs. Faunistical records are supplemented with data on phenolgy and breeding biology. Young eagles were relatively often predated by hawks. In the diet of eagles, occurred predominantly birds, often passerines. Some individuals of young Spermophilus citellus were recorded there, too. Prvé potvrdené vyhniezdenie potápača veľkého (Mergus merganser) na Slovensku First documented successful breeding of Goosander (Mergus merganser) in Slovakia Peter LEŠO & Rudolf KROPIL Katedra ochrany lesa a poľovníctva, Lesnícka fakulta TU vo Zvolene, Masarykova 20, 960 53 Zvolen, Slovensko; leso@vsld.tuzvo.sk, kropil@vsld.tuzvo.sk Regular occurrence of the Goosander was recorded during the breeding periods 2004–2007 in the middle-stream of the River Hron. Occurrence relates to spreading of Goosander’s breeding area in the middle Europe during the recent decades. The part of the River Hron between Zvolen and Žiar nad Hronom(27 km)was regularly monitored using a boat from April to June in 2004–2007. The breeding of the Goosander was not confirmed in 2004–2007, in spite of sporadic displays of the breeding behaviour. Finally, two females with 3 and 8 chicks at age of several days were observed on May 27, 2007. One of them with eight juveniles was observed and documented also next day in the same locality. Sedemnásť rokov zimného sčítania vodného vtáctva na Dunaji – výsledky z rokov 1991–2007 Seventeen years of winter waterfowl census at the River Danube – results from years 1991–2007 Alžbeta DAROLOVÁ, Katarína SLABEYOVÁ, Ján GÚGH, Jozef RIDZOŇ & Ján DOBŠOVIČ Ústav zoológie SAV, Dúbravská cesta 9, 845 06, Bratislava, Slovensko; uzaedaro@savba.sk; Katedra ekologie, PřF UK, Viničná 7, 128 44 Praha 2, Česko; iwcslovakia@yahoo.com; 941 41 Bešeňov 521, Slovensko; johnyg82@yahoo.com; SOS/BirdLife Slovensko, Mlynské nivy 41, 821 09 Bratislava, Slovensko; ridzon@vtaky.sk; Švabinského 5, 851 01 Bratislava, Slovensko; dobsovic@vtaky.sk River Danube and water reservoir Gabčíkovo belong to the most important wintering sites for water birds in Slovakia. In years 1991–2007, winter water bird census was organized annually on 12–24 sections of River Danube. In this period we counted from 17934 to 98393 individuals of waterfowl, representing 23–44 species. The most common species at the observed section of River Danube was Anas platyrhynchos during ten winters, Aythya fuligula during six winters and Aythya ferina in one winter. Abundance of water birds varied according to weather conditions. Numbers of waterfowl were in smaller scale influenced by other factors, e.g. hunting and human disturbing. Gabčíkovo water reservoir was the most important wintering site for Aythya fuligula in the Central Europe and the most important wintering site for Bucephala clangula in Europe. Ornitocenózy niektorých aluviálnych mokradí v antropicky pozmenenom prostredí Poiplia Bird assemblages of some alluvial wetlands in human-changed environment of the Poiplie area Juraj ŠALÁT & Jana RYBANIČOVÁ Katedra zoológie, Univerzita Komenského v Bratislave, Mlynská dolina, 842 15 Bratislava, Slovensko; salat@fns.uniba.sk; Katedra ekológie a environmentalistiky, Univerzita Konštantína Filozofa v Nitre, Tr. A. Hlinku 1, 949 01 Nitra, Slovensko; jana.bartova@vtaky.sk Altogether 151 bird species (48.3% of them waterfowl and at water living species) were found in two localities (Bušince and Kiarov) during the years 2004–2006. There were found 20 resident breeding species (13.3%) and 29 (19%) migratory breeding species. Permigrants made 33.8% of all species and 30.5% were formed of hospites. Vplyv zimného kosenia trstiny v Národnej prírodnej rezervácii Parížske močiare na hniezdnu úspešnosť spevavcov Impact of winter reedbeds cutting on passerine breeding success in the Parížske močiare National Nature Reserve Alfréd TRNKA & Pavol PROKOP Katedra biológie, Trnavská univerzita, Priemyselná 4, 918 43 Trnava, Slovensko; atrnka@truni.sk Common Reed is frequently used as thatching material in European building industry. However, the impact of reed cutting on birds is poorly known, and it is often and issue of controversial discussions between environmentalists and harvesters. This paper presents results of an experimental study on the nest predation risk in cut and uncut reedbeds in the Parížske močiare National Nature Reserve in 2006. There were no differences in artificial nest predation rate between the cut and uncut vegetation. Moreover, the nests were most frequently predated by bird predators in both cut and uncut reedbeds. We suppose that traditional winter cutting of reed over a small area „on ice”, has not a considerable impact on nesting success of reed passerine birds. The only problem could be the shift in timing of breeding. The birds occupying uncut reedbeds start to nest earlier than those in cut reedbeds. Therefore, they may have more (second or replacement) clutches per season and hence achieve a higher rate of reproductive success. Výskyt a zimovanie labute spevavej (Cygnus cygnus) v širšom okolí Piešťan (Z Slovensko) Occurrence and wintering of Whooper Swan (Cygnus cygnus) in wider surroundings of Piešťany (W Slovakia) Pavel KAŇUŠČÁK & Branislav MATEJOVIČ Zavretý kút 42/16, 921 01 Piešťany, Slovensko; kanuscak@kios.sk; 956 07 Behynce 65, Slovensko; b.matejovic@wircom.sk Whooper Swan is not a major but a regular migrant and winter guest in wider surroundings of Piešťany. The first data come from 1861. Since 1997 the birds appear yearly at the area observed. By now we registered one to nine specimens in the time period from October 29 to April 30. The most common place of wintering was the bypass channel of River Váh, from where the birds flew to overnight at the Sĺňava water reservoir. They spent nights at Sĺňava even in the periods when it was frozen. They flew for food also to other biotopes. The maximum flight distance was 10 km. In more cases (five of eight checked birds) they stayed in the area for longer than 100 days. We noticed the difference in flight distance between the channel and other areas. The presence of Cygnus cygnus was tolerated by other birds. The major food during the stay was water plants, e.g. Potamogeton sp., Myriophyllum verticilatum. In the fields they used to feed themselves with leaves of Brassica napus. A partly tamed individual was willing to be fed with bread, rolls and wheat. Prehľad krúžkovania vtákov na Slovensku v roku 2006 Bird-ringing results in Slovakia in 2006 Vladimír SLOBODNÍK & Martin SÁROSSY ŠOP SR, Správa CHKO Ponitrie, Dlhá 3, 971 01 Prievidza, Slovensko; vladimir.slobodnik@sopsr.sk; M. R. Štefánika 43, 082 21 Veľký Šariš, Slovensko; sarossy@changenet.sk In 2006, 57 members of the Slovak Ornithological Society/ BirdLife Slovakia ringed altogether 29075 birds, 3659 of them were nestlings (12.6 %). The most numerous ringed species were Sylvia atricapilla (3453 individuals), Erithacus rubecula (2706 ind.), Coccothraustes coccothraustes (1576 ind.), Fringilla coelebs (1365 ind.) and Phylloscopus collybita (1225 ind.). The ringed birds belonged to 164 species. Lists of ten most frequently ringed passerines and ten non-passerines are given. The most frequently ringed young are also discussed. Results of 12 species re-trapped in Slovakia and ringed abroad as well as 8 species ringed in Slovakia and re-trapped abroad are given. 7. správa Faunistickej komisie Slovenskej ornitologickej spoločnosti/BirdLife Slovensko The 7th report of the Rarities Committee of the Slovak Ornithological Society/BirdLife Slovakia Vladimír ŠRANK Zoologická záhrada Bojnice, 972 01 Bojnice, Slovensko; vladimir.srank@gmail.com In 2006 the Rarities Committee of the Slovak Ornithological Society/Birdlife Slovakia discussed in total 25 announcements from which 23 were accepted. In the category A (new species for Slovakia) were accepted 3 observations: Anser caerulescens, Hirundo daurica, Oenanthe deserti. In the category B (new nidificants for Slovakia) were accepted 1 observation: Tadorna tadorna. In the category C (any occurrence and nesting of the species must by reported) were accepted 17 observations of the following species: Arenaria interpres (2 observations), Buteo rufinus, Calidris alba, Calidris canutus, Circus macrourus, Cygnus cygnus, Emberiza hortulana, Gyps fulvus (3 observations), Haematopus ostralegus, Limosa lapponica, Melanitta nigra, Pluvialis squatarola, Somateria mollissima (2 observations). In the category D (any nesting of the species must by reported) were accepted nest occurrence of Larus canus and Larus melanocephalus. |
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