The population dynamics of the Red-footed Falcon (Falco vespertinus) on the southwestern limit of its breeding range

Purger, Jenő J.; Lukács, Sándor

doi:10.2478/orhu-2022-0026

Abstract

The western boundary of the Palearctic range of the Red-footed Falcon (Falco vespertinus) is located in the Carpathian Basin, with significant breeding areas in the northern part of Serbia, Voivodina Province. The size of the breeding population has been estimated and surveyed several times since the middle of the last century. The number of breeding pairs showed considerable variation, while estimates suggested a declining trend in the population size, though the dynamics of the Red-footed Falcon population was less known. This motivated us to perform censuses every year from 2000 until 2009. During that period, the number of confirmed breeding pairs varied from 61 to 179. We found that the number of breeding pairs decreased significantly (˃ 40%) after a 3-4 year of increase. The number of breeding sites and the extent of the distribution area changed in proportion to the increase or decrease of the population size. However, the change in population size was unrelated to the general proportion of pairs breeding in colonies (87–96%) and those breeding solitarily (4–13%).

References

Barna, K. 2015. History and current status of Red-footed Falcon population size and conservation activities in Voivodina. – Ornis Hungarica 23(1): 94–100. DOI: 10.1515/orhu-2015-0008
Open DOI Search in Google Scholar Back to article
Barna, K. 2018. Conservation of the Red-footed Falcon in Serbia. – In: Palatitz, P., Solt, Sz. & Fehérvári, P. (eds.) The Blue Vesper: Ecology and Conservation of the Red-footed Falcon. – MME Birdlife Hungary, Budapest, pp. 173–180.
Search in Google Scholar Back to article
Cramp, S. & Simmons, K. E. L. (eds.) 1980. Handbook of the Birds of Europe, the Middle East and North Africa, Vol. 2. – Oxford University Press, Oxford, pp. 302–308.
Search in Google Scholar Back to article
Fehérvári, P., Harnos, A., Neidert, D., Solt, Sz. & Palatitz, P. 2009. Modelling habitat selection of the Red-footed Falcon (Falco vespertinus): a possible explanation of recent changes in breeding range within Hungary. – Applied Ecology and Environmental Research 7(1): 59–69.10.15666/aeer/0701_059069
Search in Google Scholar Back to article
Fehérvári, P., Lázár, B., Palatitz, P., Solt, Sz., Kotymán, L. & Harnos, A. 2011. Hogyan befolyásolhatja a lokális időjárás egy hazai kistestű ragadozó madár fészekaljméretét? [How the local weather condition can influence the clutch size of a small bodied bird of prey?]. – “Klíma 21” füzetek 65: 53–63. (in Hungarian)
Search in Google Scholar Back to article
Fehérvári, P., Solt, Sz., Palatitz, P., Barna, K., Ágoston, A., Gergely, J., Nagy, A., Nagy, K. & Harnos, A. 2012. Allocating active conservation measures using species distribution models: a case study of Red-footed Falcon breeding site management in the Carpathian Basin. – Animal Conservation 15(6): 648–657. DOI: 10.1111/j.1469-1795.2012.00559.x
Open DOI Search in Google Scholar Back to article
Garovnikov, B. 1976. Brojnost gačaca (Corvus frugilegus L. 1758) u Vojvodini u periodu 1974‒1976. god. [Number of Rooks (Corvus frugilegus L. 1758) in Voivodina in the period 1974‒1976]. – Priroda Vojvodine 2(2): 11‒21. (in Serbian)
Search in Google Scholar Back to article
Grujić, G., Vasin, J. & Belić, M. 2021. Soil salinisation in Vojvodina – the Republic of Serbia. – Current Opinion in Environmental Sustainability 50(6): 149–158. DOI: 10.1016/j.cosust.2021.03.015
Open DOI Search in Google Scholar Back to article
Ham, I. 1977. Stanje i mere zaštite ptica grabljivica Vojvodine sa posebnim osvrtom na Deliblatsku peščaru [Status and protection measures of birds of prey in Voivodina with special reference to Deliblato Sands]. – Priroda Vojvodine 3: 49–52. (in Serbian)
Search in Google Scholar Back to article
Ham, I. & Rašajski, J. 2000. Siva vetruška Falco vespertinus (Linnaeus, 1758) Red-footed Falcon Falco vespertinus (Linnaeus, 1758)]. – In: Puzović, S. (ed.) Atlas ptica grabljivica Srbije: mape rasprostranjenosti i procene populacija 1977–1996 [Atlas of birds of prey of Serbia: their breeding distribution and abundance 1977–1996]. – Zavod za zaštitu prirode Srbije, Beograd, pp. 153–158. (in Serbian with English Summary)
Search in Google Scholar Back to article
Hammer, Ø., Harper, D. A. T. & Ryan, P. D. 2001. PAST: Paleontological statistics software package for education and data analysis. – Paleontologia Electronica 4: 1–9.
Search in Google Scholar Back to article
Haraszthy, L. & Bagyura, J. 1993. A comparison of the nesting habits of the Red-footed Falcon (Falco vespertinus) in colonies and solitary pairs. – In: Nicholls, M. K. & Clarke, R. (eds.) Biology and Conservation of Small Falcons. – The Hawk and Owl Trust, London, pp. 80–85.
Search in Google Scholar Back to article
Horváth, L. 1955. Reed-footed Falcons in Ohat-Woods, near Hortobágy. – Acta Zoologica Academiae Scientiarum Hungaricae 1(3–4): 245–287.
Search in Google Scholar Back to article
Horváth, L. 1963. A kék vércse (Falco vespertinus L.) és a kis őrgébics (Lanius minor Gm.) élettörténetének összehasonlító vizsgálata I. A tavaszi érkezéstől a fiókák kikeléséig [Comparing life history of Red-footed Falcons (Falco vespertinus L.) and Lesser Grey Shrikes (Lanius minor Gm.) I. From spring arrival to hatching]. – Vertebrata Hungarica 5(1–2): 69–121. (in Hungarian)
Search in Google Scholar Back to article
Keve, A. & Szijj, J. 1957. Distribution, biologie et alimentation du Facon kobez Falco vespertinus L. en Hongrie [Distribution, biology and food of the Red-footed Falcon Falco vespertinus L. in Hungary]. – Alauda 25(1): 1–23. (in French)
Search in Google Scholar Back to article
Kotymán, L., Solt, Sz., Horváth, É., Palatitz, P. & Fehérvári, P. 2015. Demography, breeding success and effects of nest type in artificial colonies of Red-footed Falcons and allies. – Ornis Hungarica 23(1): 1–21. DOI: 10.1515/orhu-2015-0001
Open DOI Search in Google Scholar Back to article
Molnár, G. 2000. A kék vércse, a vörös vércse és az erdei fülesbagoly mesterséges telepítésének eredményei a Dél-Alföldön [The breeding of the Red-footed Falcon (Falco vespertinus), Kestrel (Falco tinnunculus) and Long-eared Owl (Asio otus) in artificial nest boxes in the Dél-Alföld region]. – Ornis Hungarica 10: 93–98. (in Hungarian)
Search in Google Scholar Back to article
Palatitz, P., Fehérvári, P., Solt, Sz., Kotymán, L., Neidert, L. & Harnos, A. 2011. Exploratory analyses of foraging habitat selection of the Red-footed Falcon (Falco vespertinus). – Acta Zoologica Academiae Scientiarum Hungaricae 57(3): 255–268.
Search in Google Scholar Back to article
Palatitz, P., Fehérvári, P., Solt, Sz. & Horváth, É. 2015. Breeding population trends and pre-migration roost-site survey of the Red-footed Falcon in Hungary. – Ornis Hungarica 23(1): 77–93. DOI: 10.1515/orhu-2015-0007
Open DOI Search in Google Scholar Back to article
Palatitz, P., Solt, Sz. & Fehérvári, P. 2022. Kék vércse Falco vespertinus (Linnaeus 1766) [Red-footed Falcon Falco vespertinus (Linnaeus 1766)]. – In: Haraszthy, L. & Bagyura, J. (eds.) Magyarország ragadozó madarai és baglyai, 2. kötet, Sólyomalakúak és bagolyalakúak [Birds of Prey and Owls in Hungary, Vol. 2. Falconiformes and Strigiformes]. – Magyar Madártani és Természetvédelmi Egyesület, Budapest, pp. 351–387. (in Hungarian)
Search in Google Scholar Back to article
Parker, J. W. 1972. A mirror and pole device for examining high nests. – Bird-Banding 43(3): 216–218.10.2307/4511885
Search in Google Scholar Back to article
Popov, H. & Svetozarevich, J. 2021. Changes and contemporary trends in the annual amounts of precipitation in Serbia. – Journal of the Bulgarian Geographical Society 44: 73–79. DOI: 10.3897/jbgs.e77102
Open DOI Search in Google Scholar Back to article
Postupalsky, S. 1974. Raptor reproductive success: some problems with methods, criteria, and terminology. – Raptor Research Report 2: 21–31.
Search in Google Scholar Back to article
Purger, J. J. 1996. Number and distribution of Red-footed Falcon (Falco vespertinus) nests in Voivodina (Northern Serbia). – Journal of Raptor Research 30(3): 165–168.
Search in Google Scholar Back to article
Purger, J. J. 2008. Numbers and distribution of Red-footed Falcons (Falco vespertinus) breeding in Voivodina (Northern Serbia): a comparison between 1990–1991 and 2000–2001. – Belgian Journal of Zoology 138(1): 3–7.
Search in Google Scholar Back to article
Purger, J. J. & Mužinić, J. 1997. The breeding distribution and migratory movements of the Red-footed Falcon (Falco vespertinus) in province Voivodina (southern part of Carpathian basin). – The Ring 19: 1–2.
Search in Google Scholar Back to article
Puzović, S., Simić, D., Saveljić, D., Gergelj, J., Tucakov, M., Stojnić, N., Hulo, I., Ham, I., Vizi, O., Šćiban, M., Ružić, M., Vučanović, M. & Jovanović, T. 2003. Ptice Srbije i Crne Gore – veličine gnezdilišnih populacija i trendovi: 1990–2002 [Birds of Serbia and Montenegro – breeding population estimates and trends: 1990–2002]. – Ciconia 12: 35–120. (in Serbian with English Summary)
Search in Google Scholar Back to article
Puzović, S., Sekulić, G., Stojnić, N., Grubač, B. & Tucakov, M. 2009. Značajna područja za ptice u Srbiji [Important Bird Areas in Serbia]. – Ministry of Environment and Spatial Planning, Institute for Nature Conservation of Serbia, Provincial Sectretariat of Environmental Protection and Sustainable Development, Beograd (in Serbian)
Search in Google Scholar Back to article
Puzović, S., Radišić, D., Ružić, M., Rajković, D., Radaković, M., Pantović, U., Janković, M., Stojnić, N., Šćiban, M., Tucakov, M., Gergelj, J., Sekulić, G., Agošton, A. & Raković, M. 2015. Ptice Srbije: procena veličina populacija i trendova gnezdarica 2008–2013 [Birds of Serbia: breeding population estimates and trends for the period 2008–2013]. – Bird Protection and Study Society of Serbia, Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Novi Sad (in Serbian)
Search in Google Scholar Back to article
Ružić, M., Rajković, D., Gergelj, J., Barna, K., Skorić, S., Kostin, P. & Ronto, L. 2009. Podaci o gnežđenju sive vetruške Falco vespertinus u nekim kolonijama u Bačkoj i Banatu tokom 2009. [Data on breeding of Red-footed Falcon Falco vespertinus in some colonies in Bačka and Banat in 2009]. – Ciconia 18: 122–127. (in Serbian with English Summary)
Search in Google Scholar Back to article
Solt, Sz., Palatitz, P., Fehérvári, P., Gergely, J., Ágoston, A. & Barna, K. 2010. Az MME Kékvércse-védelmi Munkacsoport 2010. évi beszámolója [Red-footed Falcon Working Group Annual Report 2010]. – Heliaca 8: 17–21. (in Hungarian)
Search in Google Scholar Back to article
Tošić, I., Hrnjak, I, Gavrilov, M. B., Unkašević, M., Marković, S. B. & Lukić, T. 2014. Annual and seasonal variability of precipitation in Vojvodina, Serbia. – Theoretical and Applied Climatology 117(1–2): 331–341. DOI: 10.1007/s00704-013-1007-9
Open DOI Search in Google Scholar Back to article
Tóth, I. 1994. Kék vércse (Falco vespertinus) állományfelmérés és védelem Békés-megyében [Population survey and conservation measures of Red-footed Falcon (Falco vespertinus) in County Békés]. – Calandrella 8(1–2): 115–119. (in Hungarian)
Search in Google Scholar Back to article
Tóth, I. & Marik, P. 1999. Kék vércse felmérés [Red-footed Falcon Survey]. – Madártávlat 6: 4–5. (in Hungarian)
Search in Google Scholar Back to article
Tucakov, M., Radišić, D., Šćiban, M., Ružić, M., Janković, M., Hulo, I., Horvat, F., Sekereš, O., Hardi, B., Žuljević, A., Mere, T., Đapić, D., Rajković, D., Agošton, A., Vig, L., Balog, I., Ham, I., Gergelj, J., Barna, K. & Medveđ, A. 2010. Brojnost i distribucija kolonija gačaca Corvus frugilegus u Bačkoj [Numbers and distribution of Rook Corvus frugilegus colonies in Bačka]. – Ciconia 19: 110–116. (in Serbian with English Summary)
Search in Google Scholar Back to article
Vasić, V., Grubač, B., Sušić, G. & Marinković, S. 1985. The status of birds of prey in Yugoslavia, with particular reference to Macedonia. – In: Newton, I. & Chancellor, R. D. (eds.) Conservation Studies on Raptors. – ICBP Technical Publication 5: 45–53.
Search in Google Scholar Back to article
Vasić, V. F. 1996. European news: Red-footed Falcon Falco vespertinus. – British Birds 89(6): 247–266.
Search in Google Scholar Back to article
Végvári, Zs., Magnier, M. & Nogues, J-B. 2002. Kék vércsék (Falco vespertinus) fészekválasztása és állományváltozása a vetési varjak (Corvus frugilegus) állományváltozásának tükrében 1995–1999 között a Hortobágyon [Nest selection of Red-footed Falcons (Falco vespertinus) and their population changes in relation to population changes of Rooks (Corvus frugilegus) between 1995 and 1999 on the Hortobágy]. – Aquila 107–108: 9–14. (in Hungarian with English Summary)
Search in Google Scholar Back to article
Vilagosi, J. 2005. Behaviour, nest-site selection and the use of artificial nest-sites by Red-footed Falcons in Hortobagy National Park, Hungary. – British Birds 98(6): 317–319.
Search in Google Scholar Back to article

The population dynamics of the Red-footed Falcon (Falco vespertinus) on the southwestern limit of its breeding range

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