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1 December 2002 Nest-Site Selection in the Magpie Pica pica in a High-Density Urban Population of Sofia (Bulgaria)
Anton Antonov, Dimitrinka Atanasova
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The study was carried out in 1999–2000 in a 405 ha area urban habitat and revealed one of the highest densities (56.8 pairs/km2) for the species. Breeding density was best predicted by the diversity of trees in the plot and was not limited by the presence of tall trees. Birds used 69% of the available tree species and preferentially selected half of them. Taller tree species were preferred to shorter ones and coniferous trees were preferred to broadleaved ones. Nests higher above the ground were more likely to be successful than nests lower down. The greater the nest height, the earlier the Magpies laid eggs and the more fledglings they produced. Pairs nesting in conifers laid earlier than those in broadleaved trees but there were no significant differences in clutch-size, hatching or fledging success between the two habitats. The nest site preference was not well explained by the success rate. Regardless of species, not only tall trees, where success was greater, were preferred but also smaller ones, despite the lower success rate. Nests in conifers were no more successful than those in broadleaved trees, despite the marked preference for conifers. Magpies that succeeded in their final breeding attempts in one season were less likely to make a contrasting nest-site choice the following season. The lack of a clear adjustment between the nest-site selection pattern and breeding success was hypothesized to be due to two non-exclusive mechanisms: 1) either there are no strong selective pressures at any type of nest-site and on the behavioral plasticity of Magpies or else selective pressures may change during the season; 2) the dependence of nest-site selection on bird quality.



A. V. Badyaev 1995. Nesting habitat and nesting success of eastern Wild Turkey: potential causes and reproductive consequences. Condor 98: 589–594. Google Scholar


G. Baeyens 1981. Magpie breeding success and Carrion Crow interference. Ardea 69: 125–139. Google Scholar


T. R. Birkhead 1991. The Magpies. Poyser, London. Google Scholar


T. R. Birkhead , S. F. Eden , K. Clarkson , S. F. Goodburn , J. Pellatt 1986. Social organisation of a population of magpies Pica pica. Ardea 74: 59–68. Google Scholar


R. G. Clark, D. Shutler 1999. Avian habitat selection: pattern from process in nest-site use by ducks? Ecology 80: 272–287. Google Scholar


S. Cramp (ed.). 1994. The Birds of the Western Palearctic. Vol. 6: 54–75. Google Scholar


M. S. Dhindsa , P. E. Komers , D. A. Boag 1989. Nest height of Black-billed Magpies: is it determined by human disturbance or habitat type? Can. J. Zool. 67: 228–232. Google Scholar


K. Eguchi 1995. Seasonal change in breeding success of the Black-billed Magpie Pica pica sericea. Jap. J. Ornithol. 44: 73–80. Google Scholar


K. Eguchi , M. Takeishi 1997. The ecology of the Black-billed Magpie Pica pica sericea in Japan. Acta Ornithol. 32: 33–37. Google Scholar


S. F. Goodburn 1991. Territory quality or bird quality? Factors determining breeding success in the Magpie Pica pica. Ibis 133: 85–90. Google Scholar


E. Górska , W. Górski 1997. Nest sites of the Magpie Pica pica in urban and rural habitats in the Koszalin Region, NW Poland. Acta Ornithol. 32: 45–50. Google Scholar


F. Götmark , D. Blomqvist , O. C. Johansson , J. Bergkvist 1995. A trade-off between concealment and view of the surroundings? J. Avian Biol. 26: 305–312. Google Scholar


L. Jerzak 1995. Breeding ecology of an urban Magpie Pica pica population in Zielona Góra (SW Poland). Acta Ornithol. 29 : 123–133. Google Scholar


L. Jerzak 1997. Magpie Pica pica nest sites in urban habitats in Poland. Acta Ornithol. 32: 69–76. Google Scholar


L. Jerzak 2001. Synurbanization of the Magpie in the Palearctic. In: J. M. Marzluf, R. Bowman, R. Donnelly (eds). Avian Ecology and Conservation in an Urbanizing World. Kluwer Academ. Publ., pp. 403–425. Google Scholar


H. Klomp 1970. The determination of clutch-size in birds. A review. Ardea 58: 1–124. Google Scholar


R. L. Knight , R.E. Fitzner 1985. Human disturbance and nest site placement in Black-billed Magpies. J. Field Ornithol. 56: 153–157. Google Scholar


Z. Kosiński 2001. The breeding ecology of the Greenfinch Carduelis chloris in urban conditions (study in Krotoszyn, W Poland). Acta Ornithol. 36: 111–121. Google Scholar


M. Luniak , P. Kozłowski , W. Nowicki 1997. Magpie Pica pica in Warsaw — abundance, distribution and change in its population. Acta Ornithol. 32:77–86. Google Scholar


T. E. Martin 1992. Breeding productivity considerations: what are the appropriate habitat features for management? In J. M. Hagan, D. W. Johnston (eds). Ecology and conservation of neotropical migrants. Smithsonian Inst. Press, Washington, D.C., USA., pp. 455–473 Google Scholar


T. E. Martin 1993. Nest predation and nest sites: new perspectives on old patterns. BioScience 43: 523–532. Google Scholar


T. E. Martin 1998. Are microhabitat preferences of coexisting species under selection and adaptive? Ecology 79: 656–670. Google Scholar


C. J. Norment 1993. Nest-site characteristics and nest predation in Harris' Sparrows and White-crowned Sparrows in the Northwest territories, Canada. Auk 110: 769–777. Google Scholar


G. Pasinelli 2000. Oaks (Quercus sp.) and only oaks? Relations between habitat structure and home range size of the middle spotted woodpecker (Dendrocopos medius). Biol. Conserv. 93: 227–235. Google Scholar


L. J. Petit , D. R. Petit 1996. Factors governing habitat selection by Prothonotary Warblers: field tests of the Fretwell-Lucas models. Ecol. Monogr. 66: 367–387. Google Scholar


R. Prinzinger , K. Hund 1981. Untersuchugen uber die okologischen Anspruche an den Nistbiotop bei Elster Pica pica und Rabencrache Corvus corone cornix. Okol. Vogel 3: 249–259. Google Scholar


Inc. SPSS 2001. SPSS/WIN. Chicago: SPSS Inc. Google Scholar


L. Stepanyan 1997. Some geographical variations of Magpie behaviour between European Russia, Middle and Central Russia and Korea. Acta Ornithol. 32: 132. Google Scholar


A. Tarvin , K. Smith 1995. Microhabitat factors influencing pre dation and success of suburban Blue Jay Cyanocitta cristata nests. J. Avian Biol. 26: 296–304. Google Scholar


P. Tatner 1982a. The breeding biology of magpies Pica pica in an urban environment. J. Zool. (London) 197: 559–581. Google Scholar


P. Tatner 1982b. Factors influencing the distribution of Magpies Pica pica in an urban environment. Bird Study 29: 227–234. Google Scholar


E. Tatner 1983. The diet of urban Magpies. Ibis 125: 90–107. Google Scholar


K. Titus , J. A. Mosher , B. K. Williams 1984. Chance corrected classification for use in discriminant analysis: ecological applications. Amer. Midl. Nat. 111: 1–7. Google Scholar


S. Verhulst , J. M. Tinbergen 1991. Experimental evidence for a causal relationship between timing and success of reproduction in the Great Tit Parus major. J. Anim. Ecol. 60: 269–282. Google Scholar


G. Vines 1981. A socio-ecology of Magpies Pica pica. Ibis 123: 190–202. Google Scholar


T. Vuorisalo , T. Hugg , P. Kaitaniemi , J. Lappalainen , S. Vesanto 1992. Habitat selection and nest sites of the Magpie Pica pica in the city of Turku, SW Finland. Ornis Fenni. 69: 29–33. Google Scholar


K. Witt 1997. One the abundance of magpie Pica pica during the breeding and wintering seasons in Berlin. Acta Ornithol. 32: 121–127. Google Scholar
Anton Antonov and Dimitrinka Atanasova "Nest-Site Selection in the Magpie Pica pica in a High-Density Urban Population of Sofia (Bulgaria)," Acta Ornithologica 37(2), 55-66, (1 December 2002).
Received: 1 August 2002; Accepted: 1 October 2002; Published: 1 December 2002

breeding density
nest height
nest-site selection
Pica pica
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