Milan Vogrin

The Academic and Research Network of Slovenia

Izvleček. V članku predstavljamo 11 novih opažanj in literaturne podatke o pojavljanju navadne česnovke (Pelobates fuscus) v Podravju. Najdišča v Podravju pokrivajo severni rob areala navadne česnovke v dolini reke Drave. Novi podatki so z lokacij, kjer je bila navadna česnovka že najdena (Rački ribniki, Ormoške lagune), in tudi z novih lokacij (Po...

Prey dropping behaviour was observed in spring 2014 in black-headed gull, Chroicocephalus ridibundus. I observed one incident when a gull dropped a mussel. This was the first observation of such behaviour in the species at least in the Central Europe. Since hooded crows, Corvus cornix, did the same on the same location at the same time I could assu...

Ten new observations of the European pond turtle Emys orbicularis (Linnaeus, 1758) in the Podravje region are presented. One observation is fairly old, while the others have been made in the last six years. Most of the data are just random observations and do not give a complete overview of the species distribution in the Podravje region. New data...

Presence and correlation between the numbers of Black-headed and Yellow-legged Gull was studies between 1998 and 2004 on Kolut fishponds in NW Serbia. Both species occurred there from February to December. Spring migration culminated in late February and early March. The period of the most intensive autumn concentration was from October to December...

The Common Tern Sterna hirundo and Black-headed Gull Chroicocephalus ridibundus are regular breeders on the islets and electricity transmission pedestals on Ptujsko jezero reservoir (Lake Ptuj) on the Drava River. Here, sports and recreation activities with various types of vessels also take place between May and September. The Decree on navigation...

The invasion by alien species of new regions and territories is a phenomenon of paramount and global importance. It has been estimated that during the last four centuries invasive alien species have contributed to nearly 40% of animal extinctions with known causes. The unique combination of geological, geophysical and climatic factors in the Medite...

Effective and targeted conservation action requires detailed information about species, their distribution, systematics and ecology as well as the distribution of threat processes which affect them. Knowledge of reptilian diversity remains surprisingly disparate, and innovative means of gaining rapid insight into the status of reptiles are needed i...

We studied the autumn and spring migration of water birds in autumn of 2003 and spring of 2004 at the Brădeni fishponds, situated in central Romania. We identified 24 passage bird species during autumn (seven species) and spring (23 species). The average number of passage bird species is significantly larger in spring than in autumn. The difference...

Ključne besede: navadna krastača, Bufo bufo bufo, ceste, podhodi za dvoživke Key words: common toad, Bufo bufo bufo, roads, underground passageways for amphibians IZVLEČEK Za Slivniško jezero in tamkajšnjo ribogojnico Rakitovec je bila ugotovljena obsežna populacija navadnih krastač (Bufo bufo bufo). V letu 1994 je nanjo opozorilo veliko povoženih...

Population and ecological parameters such as numbers of larvae, microhabitat use, niche breadth and niche overlap of three species of syntopic larval newts (Alpine newt Triturus alpestris, Italian crested newt T. carnifex, and common newt T. vulgaris) were studied for two years in a small pond at 1160 m a.s.l. in NE Slovenia. Differences in microha...

Ontogenetic shifts at lizards’ microhabitat selection were studied using sand lizard (Lacerta agilis) as model organism. Field observations evidenced that sightings of hatchling lizards followed the distribution of microhabitat categories while yearlings and adults showed a more active perch selection. However, multivariate analysis evidenced activ...

Morphometric characters (snout-vent length, tail length, head length, head width, and number of ventrals and gulars) were analysed in 58 male and 44 female Italian Wall Lizards, Podarcis sicula campestris, from the Adriatic coast of Slovenia. The Italian Wall Lizard is significantly dimorphic in most characters analysed. Males were significantly la...

In summer 1997 on the island of Pag in Croatia, we studied a selection of perching sites of the Turkish gecko Hemidactylus turcicus. With the transect sampling of 1 hour in 2 days we found 102 geckos. Adults as well as juveniles were founds mostly on vertical walls.

We studied bird species breeding on a golf course with an area of 55 ha in Ptuj, north-eastern Slovenia. The golf course is situated near the river Drava, on a former flood plain forest with meadows dominated by Alnus glutinosa. Some small forested areas are still preserved as part of the golf course. The golf course also contains several springs....

We studied birds breeding in drainage channels on the intensively farmed fields of Dravsko polje (Drava field) in NE Slovenia. During the breeding season in 2000, we checked six different drainage channels (see Table 1 for more details), with a total length of 8.900 m, with the mapping method. We found six breeding species (see Table 2), the most c...

During the breeding season of 1998, the experiment was conducted on the breeding density of Common magpie Pica pica , western jackdaw Corvus monedula and hooded crow Corvus cornix in towns in north-eastern Slovenia. In each town I randomly selected plots.They measured 99 ha in Celje, 65.5 ha and 52.3 ha in Maribor, 46.0 ha in Ptuj, 73.4 in Slovensk...

Diving and foraging patterns of the Great Crested Grebe Podiceps cristatus were studied on Vrbje fishpond in Central Slovenia. Three pairs and their 10 young were studied. The duration of 348 dives of the six adults before hatching, 295 dives of the three pairs of adults with young, and 185 dives of the immature birds were recorded during the breed...

A survey of breeding birds was carried out in eleven traditional orchards in the Lower Savinja Valley on Plevna near Žalec. Altogether, traditional orchards cover 3.75 ha of this area (Table 1). Most of the trees in these orchards are apple trees. Sixteen species of birds were found to breed in these orchards (Table 2); the most frequent breeder wa...

MILAN VOGRIN Between 1993 and 2000, breeding success of Great Crested Grebe Podiceps cristatus was monitored at two fishpond localities, Vrbje in central and Race in north-eastern Slovenia. During the study 50 and 23 nests with eggs were found, respectively. On average, 1.3 chicks per territorial pair survived until fledged in September. Between th...

Published information about birds living in agricultural habitats are extensive, though not exhaustive. Qualitative data are available for several geographic areas (e.g. O'Connor and Shrubb 1986; Pain and Pienkowski 1997 and references therein). On the other hand, information about breeding birds in particular types of fields, e.g. hop fields, are...

The most common functions attributed to bird song are territory defence against other males, and female attraction and stimulation during breeding (e.g. McGregor 1991). Some birds only sing for a short period of time, when attracting mates (Catchpole 1980) or they sing longer and more complex songs before they get mated (Hasselquist and Bensch 1991...

Between 1986 to 1998 data about breeding of Little grebe Tachybaptus ruficollis and Great Crested Grebe Podiceps cristatus were gathered on Ra ki ribniki fishpond complex (33 ha) in north-eastern Slovenia. Up to 16 pairs of Great Crested Grebe and 19 pairs of Little Grebe were breeding in the study area. In the total data set number of breeding pai...

The migration pattern of common snipe is described for Dravsko polje in northeastern Slovenia based on observations carried out between 1985 and 1998. Spring migration occurred between mid-March and end of April, whereas autumn migration started in July and finished in mid-November. The preferred habitats during migration were drained waterbodies....

Meristic characteristics of Triturus vulgaris meridionalis were measured for 48 males and 38 females from the Mediterranean part of Slovenia. T. v. meridionalis is highly dimorphic in all measured characters, probably as the result of different selective forces acting on each sex. The mean snout-vent lengths were significantly larger in females, al...

Slovenia, one of the smallest European countries, is situated in Central Europe. It is the meeting point of four European landscapes: Alpine, Dinaric, Pannonian, and Mediterranean, which contribute to the relatively high numbers of breeding birds. In total, 377 bird species have been recorded in Slovenia. Among them, 219 are breeding species. Durin...

Van Nieuwenhuyse D., Leysen M. & Leysen K. (eds). The Little Owl in Flanders in its international context. Proceedings of the Second International Little Owl Symposium, 16-18 March 2001, Geraardsbergen, Belgium. Oriolus 67(2-3): 132-135.

Nest height and nesting losses of first broods in the Blackbird Turdus merula were studied during April and May in 1990 and 1992. Data were collected in Slovenia in one rural (Dravsko polje) and two urban areas (Ljubljana, Maribor). The Blackbird nests were located 0.7-8.0 m above ground level in urban areas and 0.1-4.4 m above ground on rural land...

The paper presents the past and current status of breeding waders in Slovenia. In the 19th century, nine waders were breeding in Slovenia, whereas about 30 years ago about seven species were breeding. Today, thirteen species breed. However, only eight species are regular breeders. The most common species is Lapwing Vanellus vanellus with up to 2000...

The breeding bird assemblage of the Race fishpond complex in north-eastern Slovenia is described. There are three ponds (4.5 ha to 20 ha) which are managed for semi-intensive fish-farming. During 13 years (1986-1998), I estimated the number of breeding bird pairs on the bases of found nests and/or observed females with fledglings. Six species of no...

Migration patterns and occurrence of Teal Anas crecca and Garganey Anas querquedula were studied in the fishpond complex Racki ribniki (35 ha) in northeastern Slovenia between 1985 and 1996. Peak numbers of Teal in spring occurred in February and in autumn during November. Spring peak numbers of Garganey occured in April, whereas in autumn the migr...

Vogrin, M. 1998. Occurrence and passage of Wood Sandpiper Tringa glareola and Green Sandpiper Tringa chloropus on the Dravsko polje, north-eastern Slovenia. Wader Study Group Bull. 87' 55-58. This paper describes the occurrence of the Wood Sandpiper and the Green Sandpiper in north-eastern Slovenia in 1984-1997. The Wood Sandpiper is a regular migr...

Die Vogelwelt, let. 120, Supplement, str. 209-212. 1999

Breeding ecology of a rural Magpie Pica pica population was studied in northeastern Slovenia during 1989-1991 and 1997. The estimated breeding density was 0.5 breeding pairs/10 ha on 346 ha of research area. Magpie nests were found in at least 14 species of trees or bushes. 24% of nests (N = 75) were found on coniferous trees. The height of the nes...

On the agricultural landscape (346 ha) in northeastern Slovenia (46°25'N, 15°45'E) the Magpie Pica pica was studied during the winter period (December-February) 1997/98. The average density was 8.38 individuals/km2. The Magpies foraged mainly single or in pairs. Differences in flock size between months were significant only on arable land (Kruskal-...

Clutch size and egg size of the Common Tern Sterna hintndo was studied in Slovenia. The total number of eggs measured was 242 from 90 nests. Among 90 complete clutches , 53 .7 % had three eggs. Density of breeding pairs had no effect on the clutch size. The largest eggs were found in clutches with two eggs. Egg length averaged 4l.23 mm, egg breadth...

The Wood Sandpiper Tringa glareola has a Holarctic distribution. It breeds mainly in Scandinavia, eastern Europe and in Siberia (Glutz von Blotzheim et al. 1977, Cramp 1983, Jarvinen & Vaisanen 1978). Sporadic or local breeding has also occurred to the west and south of these limits (e.g. Vaisanen 1997). In Slovenia, it is a common spring migrant (...

Species richness and density of bird communities on intensively cultivated acres in relation to habitat characteristics were studied on the basis of counts in 15 fields (5-69 ha) situated on Dravsko Polje (46°25'N, 15°45'E), North-eastern Slovenia. There were three groups of fields: those covered with wheat, sugar-beet and maize. On average, ten bi...

Bird census work was carried out in the forest (30.8 ha) at the edge of the Dobrovlje karst plateau in Lower Savinja VaIley (Slovenia), belonging to the Luzulo-Fagetum phytocenosis and Blechmo-Fagetum forest. The main species of the forest are: Fagus sylvatica, Quercus petraea, Pinus sylvestris and Picea abies. Twenty-six bird species were reported...

Corvus corone cornix was studied on the two agricultural plots (9.25 km2 and 4.45 km2 respectively) in Lower Savinja valley (Central Slovenia, 46′16°N 15°03′E) during its breeding period (March-June) i. 1998. Density of Corvus corone comix on the research area was 1.9 and 1.1 pairs/km2 respectively. Corvus corone cornix significantly prefers fields...

Vogrin, M. (1998): Bird communities in the suburbs and town centre of Zalec (Lower Savinja Valley, Slovenia). Aquila 103-104, p. 95-99. Breeding birds were censused using the territory mapping method in the suburbs and town centre of Zalec (Lower Savinja valley, Slovenia). The highest species density was found in the suburbs (15 species) rather tha...

During the years 1985-1996 migration patterns of Common Sandpiper Actitis hypoleucos and its habitat choice were studied on Dravsko polje in northeastern Slovenia. The peak period in spring is in the second half of April, whereas the peak period in autumn is less pronounced. The majority of Common Sandpiper seen during the migration were recorded i...

Research was carried out in the forest (29.5 ha) near to the karst plateau Dobrovlje at reservoir Žovnek (Slovenia). This forest belongs to phytocenosis Vaccinio—Vitis idaeae—Pinetum, the main species are: Picea abies and Pinus sylvestris. The aim of the present study is to demonstrate how many species and individuals occur in this forest type, and...

Geographic variation in egg measurements (egg breadth, length, volume and shape index), was studied in Lapwing, based of the published data from Europe and Asia. Egg size was found to vary significantly with geographic location. Mean egg breadth and volume decreased with longitude and increased with latitude, and this relationship explained 42% and...

Es compara la mida de l'ou de la merla entre hàbitats urbans i rurals a Eslovènia. En general, les dimensions de l'ou van ser similars a les dades d'altres treballs. No es va trobar variació significant en la llargada, amplada i volum dels ous entre els hàbitats urbans i rurals. No obstant això, la forma de l'ou va diferir de manera significativa e...

El febrer de 1996 es va observar una fotja a l'embassament de Vrbje (vall de la Baixa Savinja, Eslovènia) menjant excrements d'aus aquàtiques, probablement de cigne mut o oques. Aquest comportament alimentari inusual podria estar relacionat amb la duresa de l'hivern i la dificultat de trobar menjar que els ocells haurien tingut durant aquest any en...