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

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.

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

Annales Zoologici Fennici ◽

10.5735/086.046.0104 ◽

2009 ◽

Vol 46 (1) ◽

pp. 34-38 ◽

Cited By ~ 38

Author(s):

Piotr Tryjanowski ◽

Jakub Z. Kosicki ◽

Stanisław Kuźniak ◽

Tim H. Sparks

Keyword(s):

Breeding Success ◽

White Stork ◽

Ciconia Ciconia ◽

Long Term Changes

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Age and breeding success related to nest position in a White stork Ciconia ciconia colony

Acta Oecologica ◽

10.1016/j.actao.2006.05.008 ◽

2006 ◽

Vol 30 (3) ◽

pp. 414-418 ◽

Cited By ~ 28

Author(s):

Pablo Vergara ◽

José I. Aguirre

Keyword(s):

Breeding Success ◽

White Stork ◽

Ciconia Ciconia

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

Ornis Hungarica ◽

10.2478/orhu-2020-0001 ◽

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%.

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

Journal of Avian Biology ◽

10.1111/j.0908-8857.2007.03983.x ◽

2007 ◽

Vol 38 (5) ◽

pp. 573-579 ◽

Cited By ~ 29

Author(s):

Pablo Vergara ◽

José I. Aguirre ◽

Manuel Fernández-Cruz

Keyword(s):

Breeding Success ◽

White Stork ◽

Arrival Date ◽

Ciconia Ciconia

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

Proceedings of the National Academy of Sciences of Belarus Biological Series ◽

10.29235/1029-8940-2019-64-4-472-477 ◽

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.

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

Acrocephalus ◽

10.2478/v10100-010-0007-4 ◽

2010 ◽

Vol 31 (145-146) ◽

pp. 101-114 ◽

Cited By ~ 4

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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