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Showing entries 1351 - 1380 out of 1393
Scheiber IBR, Weiß BM, Frigerio D, Kotrschal K. Active and passive social support in families of greylag geese (Anser anser). Behaviour: an international journal of behaviourial biology. 2005;142(11-12):1535-1557.
Huber L, Apfalter W, Prossinger H. A new learning paradigm elicits fast visual discrimination in pigeons. Journal of Experimental Psychology: Animal Behavior Processes. 2005;31(2):237-246. doi: 10.1037/0097-7403.31.2.237
Scheiber IBR, Kralj S, Kotrschal K. Sampling effort/frequency necessary to infer individual acute stress responses from fecal analysis in greylag geese (Anser anser). Annals of the New York Academy of Sciences. 2005;1046:154-167. doi: 10.1196/annals.1343.012
Hoffmann I, Millesi E. Application of a radio-tracking technique to determine maternal effort during lactation in European ground squirrels (Spermophilus citellus). Advances in Ethology. 2004;109(38):107.
Mendes N, Huber L. Object Permanence in Common Marmosets (Callithrix jacchus). Journal of Comparative Psychology. 2004;118(1):103-112. doi: 10.1037/0735-7036.118.1.103
Millesi E, Hoffmann I, Aschauer A, Franceschini C. Reproduction and hibernation in females: a comparison of two sympatric ground-dwelling rodents. In Life in the Cold: Evolution, Mechanisms, Adaptation, and Application. Biol. Papers Univ. Alaska. Vol. 27. 2004. p. 367-375
Gajdon G, Fijn N, Huber L. Testing social learning in a wild mountain parrot, the kea (Nestor notabilis). Learning and Behavior. 2004;32(1):62-71. doi: 10.3758/BF03196007
Aust U, Huber L. Elemental versus configural perception in a people-present/people-absent discrimination task by pigeons. Learning and Behavior. 2003;31(3):213-224.
Kijne M, Kotrschal K. Neophobia affects choice of food-item size in group-foraging common ravens (Corvus corax). Acta Ethologica. 2002;5(1):13-18. doi: 10.1007/s10211-002-0061-6
Aust U, Huber L. Target-defining features in a "people-present/people-absent" discrimination task by pigeons. Animal Learning & Behavior. 2002;30(2):165-176.
Hemetsberger J. Die Entwicklung der Grünauer Graugansschar seit 1973. In Kotrschal K, Müller G, Winkler H, editors, Konzepte der Verhaltensforschung. Konrad Lorenz und die Folgen. Fürth: Filander Verlag. 2001
Bugnyar T, Kijne M, Kotrschal K. Food calling in ravens: Are yells referential signals? Animal Behaviour. 2001;61(5):949-958. doi: 10.1006/anbe.2000.1668
Frigerio D, Weiß BM, Kotrschal K. Spatial proximity among adult siblings in greylag geese (Anser anser): evidence for female bonding? Acta Ethologica. 2001;3(121-125):121-125. 3.
Huber L, Aust U. The relevance of evolution, species comparison, color, and categorization for the object identity problem. Cahiers de psychologie cognitive : CPC = Current psychology of cognition. 2001;20:221-229.
Aust U, Huber L. The role of item- and category-specific information in the discrimination of people versus nonpeople images by pigeons. Animal Learning & Behavior. 2001;29(2):107-119.
Huber L, Troje NF, Loidolt M, Aust U. Natural categorization through multiple feature learning in pigeons. Quarterly Journal of Experimental Psychology. Section B: Comparative and Physiological Psychology. 2000;53(4):341-357.
Hemetsberger J. Singvogel-Monitoring am Almsee, Oberösterreich. Erste Ergebnisse des Jahres 1999. Vogelkundliche Nachrichten Oberösterreichs - Naturschutz aktuell. 2000;8(1):19-27.
Fritz J, Bisenberger A, Kotrschal K. Stimulus enhancement in greylag geese: Socially mediated learning of an operant task. Animal Behaviour. 2000;59(6):1119-1125. doi: 10.1006/anbe.2000.1424
Huber S, Millesi E, Arnold W. Effects of reproductive effort on present and future reproduction in female European ground squirrels. Advances in Ethology. 1999;33:62.
Strijkstra AM, Hut RA, Millesi E, Daan S. Energy expenditure of hibernation in the European ground squirrel. In Periodic euthermy during hibernation in the European ground squirrel: causes and consequences. Wageningen: Ponsen and Looyen. 1999. p. 31-56
Hirschenhauser K, Möstl E, Kotrschal K. Within-pair testosterone covariation and reproductive output in Greylag Geese Anser anser. Ibis: the international journal of avian science. 1999;141(4):577-586. doi: 10.1111/j.1474-919X.1999.tb07365.x
Millesi E, Dittami J, Gahr M, Hemetsberger J. Post breeding changes in reed warbler androgens, corticosteroids and behaviour. Ethology. 1997;32:64-65.
Kotrschal K, Hemetsberger J. Social constraints in feeding and individual specialization for transportable food in greylag geese (Anser anser). Ökologie der Vögel : Verhalten, Konstitution, Umwelt. 1995;17:157-163.
Hemetsberger J. Der Schwarzstorch (Ciconia nigra) - eine immer häufiger zu beobachtende Vogelart in Oberösterreich. Öko-L : Zeitschrift für Ökologie, Natur- und Umweltschutz. 1992;14:3-7.
Hemetsberger J. "Regenpyramide" - eine Schutzverhaltensweise bei juvenilen Schwarzstörchen (Ciconia nigra). Egretta. 1992;192-193.
Kotrschal K, Hemetsberger J, Dittami J. Vigilance in a flock of semi-tame Greylag Geese Anser anser in response to approaching eagles Haliaeetus albicilla and Aquila chrysaetos. Wildfowl. 1992;43:215-219.
Hemetsberger J. Bestandsentwicklung und derzeitige Verbreitung des Schwarzstorches (Ciconia nigra) in Oberösterreich. Stapfia. 1989;20:119-128.
Showing entries 1351 - 1380 out of 1393