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Gajdon Gyula,

** = Publications listed in SCI/SSCI/Pubmed


Journal Article

** Picard, AM; Mundry, R; Auersperg, AM; Boeving, ER; Boucherie, PH; Bugnyar, T; Dufour, V; Emery, NJ; Federspiel, IG; Gajdon, GK; Guery, JP; Hegedic, M; Horn, L; Kavanagh, E; Lambert, ML [and 10 others] (2020): Why preen others Predictors of allopreening in parrots and corvids and comparisons to grooming in great apes. Ethology. 2020 126 (2) 207-228.


** Schwing, R; Weiss, F; Tichy, A; Gajdon, G (2019): Testing the causal understanding of water displacement by kea (Nestor notabilis). Behaviour 2019; 156: 447-478

** Van Buuren, M; Auersperg, A; Gajdon, G; Tebbich, S; Von, Bayern, A (2019): No evidence of mirror self-recognition in keas and Goffin's cockatoos. Behaviour 2019; 156: 763-786


** Lambert, ML; Schiestl, M; Schwing, R; Taylor, AH; Gajdon, GK; Slocombe, KE; Seed, AM (2017): Function and flexibility of object exploration in kea and New Caledonian crows. R Soc Open Sci. 2017; 4(9):170652
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** O"Hara, M; Mioduszewska, B; von Bayern, A; Auersperg, A; Bugnyar, T; Wilkinson, A; Huber, L; Gajdon, GK (2017): The temporal dependence of exploration on neotic style in birds. Sci Rep. 2017; 7(1):4742
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** Bakonyi, T; Gajdon, GK; Schwing, R; Vogl, W; Häbich, AC; Thaller, D; Weissenböck, H; Rudolf, I; Hubálek, Z; Nowotny, N (2016): Chronic West Nile virus infection in kea (Nestor notabilis). Vet Microbiol. 2016; 183:135-139

** O"Hara, M; Schwing, R; Federspiel, I; Gajdon, GK; Huber, L (2016): Reasoning by exclusion in the kea (Nestor notabilis). Anim Cogn. 2016; 19(5):965-975
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Published (citable) presentations at scientific conferences (A2)

O'Hara, M; Auersperg, A; Rössler, T; Federspiel, I; Schwing, R; Gajdon, G; Bugnyar, T (2016): Inference by exclusion in parrots controlled for neophilia. -8th European Conference of Behavioural Biology; JUL 12-15, 2016; Vienna, Austria.


Journal Article

** Gajdon, GK; Mundwiler, B; Stauffacher, M (2015): Development of early foraging behaviour of domestic chicks in varying social contexts. Applied Animal Behaviour Science (164), 1 29-40.

** Greer, AL; Gajdon, GK; Nelson, XJ (2015): Intraspecific variation in the foraging ecology of kea, the world's only mountain- and rainforest-dwelling parrot. New Zeal J Ecol (39), 2 254-261.

** O"Hara, M; Huber, L; Gajdon, GK (2015): The advantage of objects over images in discrimination and reversal learning by kea, Nestor notabilis. Anim Behav. 2015; 101:51-60
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** Wein, A; Gajdon, GK; Schwing, R (2015): Picture - Object Recognition in Kea (Nestor notabilis). Ethology (121), 11 1059-1070.

Original Article in Series

Gajdon, GK; Winkler, H (2015): Cognition in Woodpeckers. IN: Winkler, H [Hrsg.]: Developments in Woodpecker Biology (Denisia Band 36). Linz, Biologiezentrum des Oberösterreichischen Landesmuseums, pp. 63-76. ISBN: 978-3-85474-317-0.


Journal Article

** Auersperg, AM; Oswald, N; Domanegg, M; Gajdon, GK; Bugnyar, T (2014): Unrewarded Object Combinations in Captive Parrots. Anim Behav Cogn. 2014; 1(4):470-488
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Gajdon, GK; Lichtenegger, M; Huber, L (2014): What a parrot’s mind adds to play: the urge to produce novelty fosters tool use acquisition in kea. Open Journal of Animal Sciences (4), 2 41-58.
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Published (citable) presentations at scientific conferences (A2)

Bakonyi, T; Gajdon, GK; Schwing, R; Vogel, W; Häbich, A-C; Weissenböck, H; Nowotny, N (2014): Persisting West Nile virus infection in kea (Nestor notabilis). 154-154.-IMED 2014; OCT 31 - NOV 3, 2014; Vienna, AUSTRIA.


Journal Article

** Gajdon, GK; Ortner, TM; Wolf, CC; Huber, L (2013): How to solve a mechanical problem: the relevance of visible and unobservable functionality for kea. Anim Cogn. 2013; 16(3):483-492

Published (citable) presentations at scientific conferences (A2)

Cimadom, A; Gajdon, GK; von Bayern, AMP; Huber, L (2013): Investigating information seeking behaviour of jackdaws (Corvus monedula). -3rd TOK Conference of Compcog; JUL 3-5, 2013; Vienna, AUSTRIA.

Gajdon, GK; Eigster, M; O'Hara, M; Huber, L (2013): The impact of exploration in kea parrots solving a trap-table problem. -3rd TOK Conference of Compcog; JUL 3-5, 2013; Vienna, AUSTRIA.

Häbich, A-C; Gajdon, GK; Knotek, Z (2013): Practical approach to veterinary care of keas (Nestor notabilis). -ICAHEMM; APR 20-26, 2013; Wiesbaden, GERMANY.

Huber, L; Gajdon, G; Eigster, M; O'Hara, M (2013): Puzzle boxes for the kea’s puzzle mind: exploration and mechanical problem solving in a mountain parrot. -Behaviour 2013: Joint meeting of the 33rd International Ethological Conference (IEC) & the Association for the Study of Animal Behaviour (ASAB); AUG 4-8, 2013; Newcastle, UK.

O'Hara, M; Auersperg, AMI; von Bayern, AMP; Bugnyar, T; Huber, L; Mioduszewska, B; Wilkinson, A; Gajdon, GK (2013): Acquisitional neophilia or retentional exploration in birds. -IEC 2013; AUG 4-8, 2013; Newcastle, UK.


Journal Article

** Auersperg, AM; Gajdon, GK; von Bayern, AM (2012): A new approach to comparing problem solving, flexibility and innovation. Commun Integr Biol. 2012; 5(2):140-145
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Published (citable) presentations at scientific conferences (A2)

Gajdon, G; Stauffacher, M (2012): Foraging development with and without the mother hen and with a tutor chick. 110-110.-46th Congress of the International Society for Applied Ethology; JUL 31 - AUG 4, 2012; Vienna, Austria. IN: Waiblinger, S [Hrsg.]: Quality of life in designed environments?; (ISBN: 978-90-8686-204-7 )

Original Article in Series

O'Hara, M; Gajdon, GK; Huber, L (2012): Kea Logics: How These Birds Solve Difficult Problems and Outsmart Researchers. IN: Watanabe, S [Hrsg.]: Logic and Sensibility. Tokio, Keio University Press, pp. 23-38. ISBN: 978-4-904255-02-5.


Journal Article

** Auersperg, AM; Huber, L; Gajdon, GK (2011): Navigating a tool end in a specific direction: stick-tool use in kea (Nestor notabilis). Biol Lett. 2011; 7(6):825-828
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** Auersperg, AM; von Bayern, AM; Gajdon, GK; Huber, L; Kacelnik, A (2011): Flexibility in problem solving and tool use of kea and New Caledonian crows in a multi access box paradigm. PLoS One. 2011; 6(6):e20231
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** Gajdon, GK; Amann, L; Huber, L (2011): Keas rely on social information in a tool use task but abandon it in favour of overt exploration. Interact Stud (12), 2 304-323.

** Liedtke, J; Werdenich, D; Gajdon, GK; Huber, L; Wanker, R (2011): Big brains are not enough: performance of three parrot species in the trap-tube paradigm. Anim Cogn. 2011; 14(1):143-149

** Miyata, H; Gajdon, GK; Huber, L; Fujita, K (2011): How do keas (Nestor notabilis) solve artificial-fruit problems with multiple locks? Anim Cogn. 2011; 14(1):45-58


** Auersperg, AMI; Gajdon, GK; Huber, L (2010): Kea, Nestor notabilis, produce dynamic relationships between objects in a second-order. tool use task. Anim Behav (80), 5 783-789.


** Auersperg, AM; Gajdon, GK; Huber, L (2009): Kea (Nestor notabilis) consider spatial relationships between objects in the support problem. Biol Lett. 2009; 5(4):455-458
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** Range, F; Horn, L; Bugnyar, T; Gajdon, GK; Huber, L (2009): Social attention in keas, dogs, and human children. Anim Cogn. 2009; 12(1):181-192

** Schloegl, C; Dierks, A; Gajdon, GK; Huber, L; Kotrschal, K; Bugnyar, T (2009): What you see is what you get? Exclusion performances in ravens and keas. PLoS One. 2009; 4(8):e6368
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Original Article in Series

Huber, L; Gajdon, G; Federspiel, I; Werdenich, D (2008): Cooperation in Keas: Social and Cognitive Factors. IN: Itakura, S; Fujita, K [Hrsg.]: Origins of the social mind: Evolutionary and development views. Tokyo, Berlin, Heidelberg, New York, Springer, pp. 99-119. ISBN: 978-4-431-75179-3.


Journal Article

** Gajdon, GK (2007): Knowing psychological disposition might help to find innovation. Behav Brain Sci (30), 4 409-410.


** Gajdon, GK; Fijn, N; Huber, L (2006): Limited spread of innovation in a wild parrot, the kea (Nestor notabilis). Anim Cogn. 2006; 9(3):173-181

** Huber, L; Gajdon, GK (2006): Technical intelligence in animals: the kea model. Anim Cogn. 2006; 9(4):295-305


** Gajdon, GK; Fijn, N; Huber, L (2004): Testing social learning in a wild mountain parrot, the kea (Nestor notabilis). Learn Behav. 2004; 32(1):62-71


Conference Paper in Journal

Gajdon, GK; Fijn, N; Huber, L (2003): Cognitive aspects of spontaneous bin opening and experimental tube removal in a wild mountain parrot, the kea (Nestor notabilis). XXVIII International Ethological Conference, Florianopolis, BRAZIL, Brazil, AUG 20-26,2003. Revista de Etologia (5) 94.

Published (citable) presentations at scientific conferences (A2)

Gajdon, GK; Ortner, MT; Huber, L (2003): Do keas have insight in a tube removal task? -ASAB Summer Meeting: Personality: Patterns, Mechanisms and Functions. Why are we all different?; JUL 20-23, 2003; Grünau, AUSTRIA.

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