Seress, G., Sándor, K., Evans, Karl L., Liker, A. Food availability limits avian reproduction in the city: An experimental study on great tits Parus major. Journal of Animal Ecology (2020, in press) DOI 10.1111/1365-2656.13211
Press release and online available on 18 May 2020.


Vincze, E., Pipoly, I., Seress, G., Preiszner, B., Papp, S., Németh, B., Liker, A. & Bókony, V., 2019. Great tits take greater risk toward humans and sparrowhawks in urban habitats than in forests. Ethology 125(10): 686-701.

Pipoly,I., Szabó,K., Bókony,V., Hammer,T., Papp,S., Preiszner,B., Seress,G., Vincze,E., Schroeder, J. & Liker,A., 2019. Higher frequency of extra-pair offspring in urban than forest broods of great tits (Parus major). Frontiers in Ecology and Evolution, 7: 229


Pogány, Á., Vincze, E., Szurovecz, Z., Kosztolányi, A., Barta, Z., Székely, T. & Riebel, K. 2018. Personality assortative female mating preferences in a songbird. Behaviour, DOI: 10.1163/1568539X-00003500.

Sinkovics,C., Seress,G., Fábián,V., Sándor,K. & Liker,A. 2018. Obtaining accurate measurements of the size and volume of insects fed to nestlings from video recording. Journal of field ornithology, 89(2): 165-172.

Seress,G., Hammer,T., Bókony,V., Vincze,E., Preiszner,B., Pipoly,I., Sinkovics,C., Evans,K. & Liker,A. 2018. Impact of urbanization on abundance and phenology of caterpillars and consequences for breeding in an insectivorous bird. Ecological Applications,  DOI: 10.1002/eap.1730.


Hornok, S., Ágh, N., Takács, N., Kontschán, J., & Hofmann-Lehmann, R. 2017. Haematospirillum and insect Wolbachia DNA in avian blood. Antonie van Leeuwenhoek, 1-5., DOI: 10.1007/s10482-017-0961-0.

Bókony V., Kövér Sz., Nemesházi E., Liker A., Székely T. 2017. Climate-driven shifts in adult sex ratios via sex reversals: the type of sex determination matters. Philosophical Transactions of the Royal Society B: Biological Sciences 372: 20160325.

Seress, G., Vincze, E., Pipoly, I., Hammer, T., Papp, S., Preiszner, B., Bókony, V. and Liker, A. 2017. Effects of capture and video-recording on the behavior and breeding success of Great Tits in urban and forest habitats. Journal of Field Ornithology 88(3): 299-312.Download PDF

Vincze, E., Seress,G., Lagisz, M., Nakagawa, S., Dingemanse N. J. &  Sprau, P. 2017. Does urbanization affect predation of bird nests? A meta-analysis. Frontiers in Ecology and Evolution DOI: 10.3389/fevo.2017.00029

Bókony, V., Pipoly, I., Szabó, K., Preiszner, B., Vincze, E., Papp, S., Seress, G., Hammer  H. & Liker, A. 2017. Innovative females are more promiscuous in great tits (Parus major). Behavioral Ecology 28(2): 579–588.

Mónus, F., Liker, A., Pénzes, Z. & Barta, Z. 2017. Status signalling in male but not in female Eurasian Tree Sparrows Passer montanus. Ibis 159: 180-192.

Preiszner, B., Papp, S., Pipoly, I., Seress, G., Vincze, E.,  Liker, A. & Bókony, V. 2017. Download PDFProblem-solving performance and reproductive success of great tits in urban and forest habitats. Animal Cognition 20: 53-63.


Vincze, E., Papp, S., Preiszner, B., Seress, G., Bókony, V. & Liker, A. 2016. Habituation to human disturbance is faster in urban than rural house sparrows. Behavioral Ecology 27: 1304-1313.


Remeš, V., Freckleton, R. P., Tökölyi, J., Liker, A. & Székely, T. 2015. The evolution of parental cooperation in birds. Proceedings of the National Academy of Sciences USA 112: 13603–13608.

Pipoly, I., Bókony, V., Kirkpatrick, M., Donald, P., Székely, T., Liker, A. 2015. The genetic sex-determination system predicts adult sex ratios in tetrapods, Nature 527: 91–94.

Liker, A., Freckleton, R.P., Remeš, V. & Székely, T. 2015. Sex differences in parental care: Gametic investment, sexual selection, and social environment. Evolution 69: 2862-2875.

Rubolini, D., Liker, A., Garamszegi, L.Z., Møller, A.P. & Saino, N. 2015. Using the website to obtain robust phylogenies for avian comparative studies: A primer. Current Zoology 61: 959-965.

Preiszner, B., Papp, S., Vincze, E., Bókony, V. & Liker, A. 2015. Does innovation success influence social interactions? An experimental test in house sparrows. Ethology 121: 661-673.

Papp, S., Vincze, E., Preiszner, B., Liker, A. & Bókony, V., 2015. A comparison of problem-solving success between urban and rural house sparrows. Behaviour Ecology and Sociobiology 69: 471-480.

Vincze, E., Papp, S., Preiszner, B., Seress, G., Liker, A. & Bókony, V., 2015.
Does urbanization facilitate individual recognition of humans by house sparrows?
Animal Cognition 18: 291-298.

Seress, G& Liker, A. 2015. Habitat urbanization and its effects on birds. Acta Zoologica Academiae Scientiarum Hungaricae 61: 373-408.Download PDF

Crane, J.M.S., Pick, J.L., Tribe, A.J., Vincze, E., Hatchwell, B.J. & Russell, A.F. 2015. Chestnut-crowned babblers show affinity for calls of removed group members: a dual playback without expectancy violation. Animal Behaviour 104: 51-57.

Pogány, Á., Szurovecz, Z., Vincze, E., Barta, Z. & Székely, T., 2014. Mate preference does not influence reproductive motivation and parental cooperation in female zebra finches. Behaviour 151: 1885–1901


Download PDFSeress, G., Lipovits, Á., Bókony, V. & Czúni L. 2014. Quantifying the urban gradient: A practical method for broad measurements. Landscape and Urban Planning 131: 42-50.

Barta, Z., Székely, T., Liker, A. & Harrison, F. 2014. Social role specialization promotes cooperation between parents. American Naturalist 6: 747-761.

Székely, T., Liker, A., Freckleton, R., Fichtel, C. & Kappeler, P. 2014. Sex-biased survival predicts adult sex ratio variation in wild birds. Proceedings of the Royal Society B 281: 1788

Liker, A., Freckleton, R.P. & Székely T. 2014. Divorce and Infidelity Are Associated with Skewed Adult Sex Ratios in Birds. Current Biology 24: 880–884.

Westneat, D. F., Bókony, V., Burke, T., Chastel, O., Jensen, H., Kvalnes, T., Lendvai, Á.Z., Liker, A., Mock, D., Schroeder, J., Schwagmeyer, P.L., Sorci, G. & Stewart, I.R.K. 2014. Multiple aspects of plasticity in clutch size vary among populations of a globally-distributed songbird. Journal of Animal Ecology 83: 876–887.

Download PDFBókony, V., Lendvai, Á.Z., Vágási, I.Cs., Pătraş, L., Pap, P.L., Németh, J., Vincze, E., Papp, S., Preiszner, B., Seress, G. & Liker, A. 2014. Necessity or capacity? Physiological state predicts problem-solving performance in house sparrows. Behavioral Ecology 25: 124-135.

Seress, G. Individual and population level effects of urbanization on house sparrows (Passer domesticus) in Hungary 2014. PhD Thesis Download PDF


Download PDFPipoly, I., Bókony, V., Seress, G., Szabó, K. & Liker, A. 2013. Effects of Extreme Weather on Reproductive Success in a Temperate-Breeding Songbird. PLoS ONE 8(11): e80033. doi:10.1371/journal.pone.0080033

Download PDFLendvai, Á.Z., Bókony, V., Angelier, F., Chastel, O. & Sol, D. 2013. Do smart birds stress less? An interspecific relationship between brain size and corticosterone levels. Proceedings of the Royal Society B – Biological Sciences 280: 20131734.

Pap, K., Nagy, L., Balogh, C., G-Tóth, L. & Liker, A. 2013. Environmental factors shaping the distribution of common wintering waterbirds in a lake ecosystem with developed shoreline. Hydrobiologia 716: 163-176.

J. Schroeder, H. L. Dugdale, R. Radersma, M. Hinsch, D. M. Buehler, J. Saul, L. Porter, A. Liker et al. 2013. Fewer invited talks by women in evolutionary biology symposia. Journal of Evolutionary Biology 26: 2063–2069.

Székely, T., Remeš, V., Freckleton, R.P. & Liker, A. 2013. Why care? Inferring the evolution of complex social behaviour. Journal of Evolutionary Biology 26: 1381–1391.

Liker, A., Freckleton, R.P. & Székely, T. 2013. The evolution of sex roles in birds is related to adult sex ratio. Nature Communications 4: Article number 1587.


Download PDFSeress, G., Bókony, V., Pipoly, I., Szép, T., Nagy, K. & Liker, A. 2012. Urbanization, nestling growth and reproductive success in a moderately declining house sparrow population. Journal of Avian Biology 43: 1-12.

Download PDFBókony, V., Kulcsár, A., Tóth, Z. & Liker, A. 2012. Personality Traits and Behavioral Syndromes in Differently Urbanized Populations of House Sparrows (Passer domesticus). PLoS ONE 7(5): e36639.

Download PDFBókony, V., Seress, G., Nagy, S., Lendvai, Á.Z. & Liker, A. 2012. Multiple indices of body condition reveal no negative effect of urbanization in adult house sparrows. Landscape and Urban Planning 104: 75-84.


Download PDFSeress, G., Bókony, V., Heszberger, J. & Liker, A. 2011. Response to predation risk in urban and rural house sparrows. Ethology 117: 896-907.

Download PDFLendvai, Á.Z., Bókony, V. & Chastel, O. 2011. Coping with novelty and stress in free-living house sparrows. Journal of Experimental Biology 214: 821-828.


Download PDFVégvári, Zs., Bókony, V., Barta, Z. & Kovács, G. 2010. Life history predicts advancement of avian spring migration in response to climate change. Global Change Biology 16: 1-11.

Download PDFBókony, V., Kulcsár, A.& Liker, A. 2010. Does urbanization select for weak competitors in house sparrows? Oikos 119: 437-444.


Download PDFLiker, A., Bókony, V., Kulcsár, A.,Tóth, Z., Szabó, K., Kaholek, B. & Pénzes, Z. 2009. Genetic relatedness in wintering groups of house sparrows (Passer domesticus). Molecular Ecology 18: 4696–4706.

Download PDFTóth, Z., Bókony, V., Lendvai, Á.Z., Szabó, K., Pénzes, Z. & Liker, A.2009. Whom do the sparrows follow? The effect of kinship on social preference in house sparrowflocks. Behavioural Processes 82: 173-177.

Download PDFTóth, Z., Bókony, V., Lendvai, Á.Z., Szabó, K., Pénzes, Z. & Liker, A. 2009. Kinship and aggression: do house sparrows spare their relatives? Behavioral Ecology and Sociobiology 63: 1189-1196.

Download PDFLiker, A. & Bókony, V. 2009. Larger groups are more successful in innovative problem solving in house sparrows. Proceedings of the National Academy of Sciences USA 106: 7893-7898.

Liker, A. & Nagy, L. 2009. Migration of mallards in Hungary: migrationphenology, the origin of migrants, and long-term changes. Ringing & Migration 24: 259-265.

Download PDFBókony, V., Lendvai, Á.Z., Liker, A., Angelier, F., Wingfield, J.C. & Chastel, O. 2009. Stress response and the value of reproduction: are birds prudent parents? American Naturalist 173: 589-598.

Download PDFTóth, Z., Bókony, V., Lendvai, Á.Z., Szabó, K., Pénzes, Z. & Liker A.2009. Effects of relatedness on social foraging tactic use in house sparrows. Animal Behaviour 77: 337–342.


Download PDFGaramszegi, L.Z., Hirschenhauser, K., Bókony, V., Eens, M., Hurtrez-Boussès, S., Møller, A.P., Oliveira, R.F. & Wingfield, J.C. 2008. Latitudinal distribution, migration and testosterone levels in birds. American Naturalist 172: 533-546.

Download PDFTökölyi, J., Bókony, V. & Barta, Z. 2008. Seasonal color change by molt or by the abrasion of feather tips: a comparative study. Biological Journal of the Linnean Society 94: 711-721.

Download PDFLiker, A., Papp, Z., Bókony, V. & Lendvai, Á.Z. 2008. Lean birds in the city: body size and condition of house sparrows along the urbanization gradient. Journal of Animal Ecology 77: 789-795.

Szabó, K., Szalmás, A., Liker, A. & Barta, Z. 2008. Adaptive host-abandonment of ectoparasites before fledging? Within-brood distribution of nest mites in house sparrow broods. Journal of Parasitology 94: 1038-1043.

Download PDFKingma, S.A., Szentirmai, I., Székely ,T., Bókony, V., Bleeker, M., Liker, A. & Komdeur, J. 2008. Sexual selection and the function of a melanin-based plumage ornament in polygamous penduline tits Remizpendulinus. Behavioral Ecology and Sociobiology 62: 1277-1288.

Download PDFBókony, V., Garamszegi, L.Z., Hirschenhauser, K. & Liker, A. 2008. Testosterone and melanin-based black plumage coloration in birds. Behavioral Ecology and Sociobiology 62: 1229–1238.

Download PDFBókony, V., Liker, A., Lendvai, Á.Z. & Kulcsár, A. 2008. Risk-taking and survival in the House Sparrow Passer domesticus: are plumage ornaments costly? Ibis 150: 139-151.

Olson, V.A., Liker, A., Freckleton, R.P. & Székely, T. 2008. The strength of parental conflict in birds: testing the roles of offspring development, ecology, and mating opportunities. Proceedings of the Royal Society London B. 275: 301-307.


Seress, G.,Szabó, K., Nagy,D., Liker, A. & Pénzes, Z. 2007. Extra-pair paternity of Tree Sparrow (Passer montanus) in a semi-urban population. Tiscia 36: 17-21.

Sol, D., Székely, T., Liker, A. & Lefebvre, L. 2007. Big-brained birds survive better in nature. Proceedings of the Royal Society London B. 274: 763-769.


Lendvai, Á.Z., Liker, A. & Barta, Z. 2006.The effects of energy reserves and dominance on the use of social foraging strategies in the house sparrow. Animal Behaviour 72: 747-964.

Download PDFBókony, V., Lendvai, Á.Z. & Liker, A. 2006. Multiple cues in status signalling: the role of wingbars in aggressive interactions of male house sparrows. Ethology 112: 947-954.


Download PDFBókony, V. & Liker, A. 2005. Melanin-based black plumage coloration is related to reproductive investment in cardueline finches. Condor 107: 775-787.

Liker, A. & Székely, T. 2005. Mortality costs of sexual selection and parental care in natural populations of birds. Evolution 59: 890­897.

Szentirmai, I., Székely, T. & Liker, A. 2005. The influence of nest quality on heat loss of Penduline Tit eggs. Acta Zoologica Academiae Scientiarum Hungaricae 51: 59-66.


Download PDFLendvai, Á.Z., Barta, Z., Liker, A. & Bókony, V. 2004. The effect of energy reserves on social foraging: hungry sparrows scrounge more. Proceedings of the Royal Society London B. 271: 2467-2472.

Barta, Z., Liker, A. & Mónus, F. 2004. The effects of predation hazard on the use of social foraging tactics. Animal Behaviour 67: 301-308.

Torda, G., Liker, A. & Barta, Z. 2004. Dominance hierarchy and status signalling in captive tree sparrow (Passer montanus) flocks. Acta Zoologica Academiae Scientiarum Hungaricae 50: 35-44.

Lendvai, Á.Z., Liker, A. & Kis, J. 2004. Male badge size is related to clutch volume in the Kentish Plover. OrnisHungarica 14: 15-21.


Download PDFBókony, V., Liker, A., Székely, T. & Kis, J. 2003. Melanin-based plumage colouration and flight displays in plovers and allies. Proceedings of the Royal Society, London, B 270: 2491-2497.