scholarly journals Results of national White Stork (Ciconia ciconia) census in Hungary in 2019

2020 ◽  
Vol 28 (1) ◽  
pp. 1-10
Author(s):  
Péter Lovászi ◽  
Károly Nagy ◽  
Zoltán Görögh
Keyword(s):  
Breeding Season ◽  
Breeding Success ◽  
National Park ◽  
Census Data ◽  
Population Decline ◽  
Success For All ◽  
White Stork ◽  
Nest Material ◽  
Ciconia Ciconia ◽  
Rainy Weather

AbstractA national White Stork (Ciconia ciconia) census was organised in Hungary in 2019. The 14th country-wide nest count was coordinated by MME/BirdLife Hungary, also involving local branches and volunteers of the society and national park directorates.Altogether 5,018 nests and 2,358 White Stork nest holders without nest material were reported. 89.2% of occupied nests were built on electric poles. Although 80 years ago every third nests were found on trees, in 2019, only 6 were reported at that location. Successful pairs raised 2.62 nestlings on average, breeding success for all breeding pairs was 2.19, which is lower than typical, probably due to chilly and rainy weather during the breeding season. Based on 3,540 reported breeding pairs and former census data, the White Stork population of Hungary is estimated to be 3,860–4,020 pairs in 2019. The size of the population was ca. 15–16 thousand pairs in 1941, which halved by 1958 and decreased to 5 thousand pairs by the late 1960s. For four decades, the population fluctuated between 4,800 and 5,500 pairs but in the last twenty years, the number of breeding pairs slightly decreased in the country. The population decline is stronger in hilly areas of W Hungary, i.e. in Somogy, Vas and Zala counties is about 60%.

Relationship between arrival date, hatching date and breeding success of the white stork (Ciconia ciconia) in Slovakia

Biologia ◽  
2009 ◽  
Vol 64 (2) ◽  
Author(s):  
Miroslav Fulin ◽  
Leszek Jerzak ◽  
Tim Sparks ◽  
Piotr Tryjanowski
Keyword(s):  
Breeding Success ◽  
White Stork ◽  
Hatching Date ◽  
Ciconia Ciconia ◽  
Arrival Dates ◽  
Spring Arrival ◽  
First Arrival ◽  
Long Term Trends ◽  
Migrant Birds

AbstractChanges in the spring arrival dates of migrant birds have been reported from a range of locations and many authors have focused on long-term trends and their relationship to temperature and other climatic events. Perhaps more importantly, changed arrival dates may have consequences for the breeding dates of birds which strongly influence breeding success. In this paper we take the opportunity provided by a monitoring scheme of the white stork (Ciconia ciconia) to examine several features of the timing of arrival and breeding in relation to chick production in Slovakia during the period 1978–2002. First arrival dates ranged from 5th March to 30th April, and hatching dates varied between 26th April and 8th July. Generally, early arriving pairs started breeding earlier and a shorter interval between the arrival of the first partner and breeding, expressed here as hatching date, resulted in higher breeding success.

The fall and rise of bison populations in Wood Buffalo National Park: 1971 to 2003

2005 ◽  
Vol 83 (9) ◽  
pp. 1195-1205 ◽  
Author(s):  
Mark Bradley ◽  
John Wilmshurst
Keyword(s):  
National Park ◽  
Census Data ◽  
Disease Incidence ◽  
Population Decline ◽  
Survival Rates ◽  
Bison Bison ◽  
Adult Survival ◽  
Risk Of Predation ◽  
Increased Risk ◽  
Wood Buffalo National Park

Two hypotheses have been proposed to explain the decline of bison (Bison bison (L., 1758)) abundance in Wood Buffalo National Park (WBNP). The "disease–predation" hypothesis proposes that tuberculosis (Mycobacterium bovis (Karlson and Lessel 1970)) and brucellosis (Brucella abortus (Schmidt 1901)) reduce bison survival and reproduction, resulting in a low-density, predator-regulated equilibrium. The "habitat dispersion hypothesis" proposes that bison in one area of WBNP, the Peace–Athabasca Delta (Delta), have an increased risk of predation because they are concentrated in large meadows with high temporal and spatial predictability. We incorporate bison census data, calf and yearling segregation counts, reproductive rates, adult survival rates, and adult disease incidence in a stochastic population model to show that the historical decline of bison in WBNP would have occurred regardless of disease prevalence. Our model shows that survival of juveniles, the age class that is least susceptible to disease effects, was likely an important determinant of historical changes in population size. We also demonstrate that the population decline was most pronounced in the Delta and that juvenile survival was lower in the Delta, despite evidence that disease incidence was lower in the Delta than in the rest of WBNP. Lastly, the current population trend in WBNP is one of rapid increase, even in the presence of disease.

scholarly journals Long-Term Changes and Breeding Success in Relation to Nesting Structures used by the White Stork,Ciconia ciconia

2009 ◽  
Vol 46 (1) ◽  
pp. 34-38 ◽  
Author(s):  
Piotr Tryjanowski ◽  
Jakub Z. Kosicki ◽  
Stanisław Kuźniak ◽  
Tim H. Sparks
Keyword(s):  
Breeding Success ◽  
White Stork ◽  
Ciconia Ciconia ◽  
Long Term Changes

Arrival date, age and breeding success in white stork Ciconia ciconia

2007 ◽  
Vol 38 (5) ◽  
pp. 573-579 ◽  
Author(s):  
Pablo Vergara ◽  
José I. Aguirre ◽  
Manuel Fernández-Cruz
Keyword(s):  
Breeding Success ◽  
White Stork ◽  
Arrival Date ◽  
Ciconia Ciconia

Community structure and dispersal of mites (Acari, Mesostigmata) in nests of the white stork (Ciconia ciconia)

Biologia ◽  
2006 ◽  
Vol 61 (5) ◽  
Author(s):  
Daria Bajerlein ◽  
Jerzy Błoszyk ◽  
Dariusz Gwiazdowicz ◽  
Jerzy Ptaszyk ◽  
Bruce Halliday
Keyword(s):  
Community Structure ◽  
Abundant Species ◽  
Mite Species ◽  
White Stork ◽  
Nest Material ◽  
Ciconia Ciconia ◽  
The Family ◽  
Before And After

AbstractThe fauna of Mesostigmata in nests of the white stork Ciconia ciconia was studied in the vicinity of Poznań (Poland). A total of 37 mite species was recovered from 11 of the 12 nests examined. The mite fauna was dominated by the family Macrochelidae. Macrocheles merdarius was the most abundant species, comprising 56% of all mites recovered. Most of the abundant mite species were associated with dung and coprophilous insects. It is likely that they were introduced into the nests by adult storks with dung as part of the nest material shortly before and after the hatching of the chicks.

scholarly journals Using self-organizing maps to investigate environmental factors regulating colony size and breeding success of the White Stork (Ciconia ciconia)

2012 ◽  
Vol 154 (2) ◽  
pp. 481-489 ◽  
Author(s):  
Abdelkrim Si Bachir ◽  
Haroun Chenchouni ◽  
Nawel Djeddou ◽  
Christophe Barbraud ◽  
Régis Céréghino ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Breeding Success ◽  
Colony Size ◽  
White Stork ◽  
Self Organizing Maps ◽  
Ciconia Ciconia ◽  
Self Organizing

scholarly journals Dynamics of number, success of reproduction and territorial distribution of White Stork in the central part of Belarus

2019 ◽  
Vol 64 (4) ◽  
pp. 472-477
Author(s):  
A. V. Chernomorets
Keyword(s):  
Spatial Distribution ◽  
Breeding Success ◽  
White Stork ◽  
Ciconia Ciconia ◽  
Plot Area ◽  
Unfavourable Prognosis ◽  
Dynamics Of Number

The results of White Stork Ciconia ciconia study on monitoring plot (area of 100 km2, Volozhin district, Minsk Region) in 2004–2018 are analyzed: numbers, spatial distribution, breeding success and location of nests on different supports. Decrease of numbers, significant reduction of breeding success and grow the rate of using electric pylons for nesting are allowed to make an unfavourable prognosis for population.

scholarly journals Population dynamics of the White Stork Ciconia ciconia in Slovenia between 1999 and 2010

Acrocephalus ◽  
2010 ◽  
Vol 31 (145-146) ◽  
pp. 101-114 ◽  
Author(s):  
Damijan Denac
Keyword(s):  
Population Dynamics ◽  
Breeding Success ◽  
Weather Conditions ◽  
Breeding Population ◽  
White Stork ◽  
Breeding Period ◽  
Ciconia Ciconia ◽  
White Storks ◽  
Breeding Grounds ◽  
Unfavourable Weather

Population dynamics of the White StorkCiconia ciconiain Slovenia between 1999 and 2010Between 1999 and 2010, an annual census of the White StorkCiconia ciconiabreeding population was carried out in Slovenia using standardised methods. The Stork's population was concentrated in the NE and SE parts of Slovenia. In the 1999-2010 period, the breeding range of its population in Slovenia expanded in NW direction (the Savska ravan region), in SW direction (the Notranjsko podolje and Pivško podolje regions), but the species also colonized a part between Central and SE Slovenia (Dolenjsko podolje). Between 193 and 240 pairs were breeding during the study period, 209 pairs on average (HPa). The largest number of breeding pairs was recorded in 2004, the smallest in 2005. During the study period, breeding pairs (HPa) occupied 350 discrete nests in total. Average number of breeding pairs that raised juveniles (HPm) was 161. The highest fecundity was recorded in 2004, when 534 juveniles (JZG) fledged, the lowest in 2006, with only 219 fledged juveniles. On average, 414 juveniles fledged per year. The breeding pairs' (JZa) average breeding success in these 12 years was 2.02, the highest in 2000 (2.41), the lowest in 2006 (1.09). Average breeding success for the successful breeding pairs (JZm) was 2.57. The highest was in 2007 (2.94), the lowest in 2006 (2.07). The largest number of breeding pairs in 2004 and 2008 can be explained by the favourable fecundity in the population in 2000 and 2004, as juveniles become sexually mature at the age of 3-5 years, and at that age they generally return to the breeding grounds for the first time. The lowest number of breeding pairs and poor breeding success in 2005 and 2006 was caused by late arrival of White Storks to the breeding grounds and by unfavourable weather conditions during the breeding period. The pattern of nests placement did not change generally during the last 12 years. The largest proportion of nests was positioned on various kinds of poles (81%) and on chimneys (18%). In total, 27 area surveyors and 239 assistants helped in census realisation.

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