Reseña acerca de los campos alrededor de la
antigua estancia Monte Molina, Saladillo, Córdoba

History of the camps around the ancient estancia
Monte Molino, Saladillo, Córdoba, Argentina

Compilada por
Juan D. Delius, Konstanz, Alemania,
anteriormente de la estancia La Maya, Monte Buey




Reseña completa
(PDF, ~12 MB, edicíon febrero 2013)

Links externos



Research on Pigeons and Other Species


See also Department of Psychology at the University of Konstanz



Publications by Juan D. Delius

For open access to pdf files of many of the publications listed, go to Researchgate,,

or KOPS, the institutional repository of the University of Konstanz,, and search for Delius.


1950s / 1960s / 1970s / 1980s / 1990s / 2000s / Latest


Delius, J.D. (1953) Algo sobre el langostero. Hornero 10: 80.

Delius, J.D. & Hammerschmidt, F. (1953) Picaflor coludo en la pampa cordobesa. Hornero 10: 80.


Delius, J.D. (1963) Das Verhalten der Feldlerche. Z. Tierpsychol. 20: 297-348.


Delius, J.D. (1965) A population study of skylarks. Ibis 107: 466-492.


Delius, J.D. (1966) Pentobarbital anaesthesia in the herring and lesser black-backed gull. J. Small Anim. Pract. 7: 605-609.

Delius, J.D. (1966) Some techniques for the electrical brain stimulation of small unrestrained animals. Med. Biol. Engng. 4: 393-397.


Delius, J.D. (1967) Displacement activities and arousal. Nature 214: 1259-1260. Reprinted in: Fox, M.W. (ed.), Readings in Ethology and Comparative Psychology. Brooks Cole, Monterrey (1973).


Delius, J.D. (1968) Colour preference shift in hungry and thirsty pigeons. Psychonom. Science 13: 273-274.


Delius, J.D. (1969) A stochastic analysis of the maintenance behaviour of skylarks. Behaviour 33: 137-178.


Delius, J.D. (1970) The effect of daytime, tides and other factors on some activities of lesser black-backed gulls, Larus fuscus. Rev. Comp. Anim. 4: 3-11.

Delius, J.D. (1970) Irrelevant behaviour, information processing and arousal homeostasis. Psychol. Forsch. 33: 165-188.

Delius, J.D. (1970) The ontogeny of behaviour. In: F.O. Schmitt (ed.) The Neurosciences, Second Study Program, pp. 188-196. Rockefeller Univ. Press, New York.

Delius, J.D. & Thompson, G. (1970) Brightness dependence of colour preferences in herring gull chicks. Z. Tierpsychol. 27: 242-249.


Delius, J.D. (1971) Foraging behaviour patterns of herring gulls elicited by electrical forebrain stimulation. Experientia 27: 1287-1289.

Delius, J.D. (1971) Neural substrates of vocalisations in gulls and pigeons. Exp. Brain Res. 12: 64-80.

Delius, J.D. (1971) Review of: Social Behaviour in Birds and Mammals, J.H. Crook (ed.). Brit. J. Psychol. 62: 274-275.

Emmerton, J. & Delius, J.D. (1971) The feasibility of mail sorting by pigeons. Report, General Post Office Headquarters, London. Corrected reprint, 2002.


Delius, J.D. & Bennetto, K. (1972) Cutaneous sensory projections of the avian forebrain. Brain Res. 37: 205-221.

Delius, J.D., Thompson, G., Allen, K. & Emmerton, J. (1972) Colour mixing and colour preferences in neonate gulls. Experientia 28: 1244-1246.

Parker, D. & Delius, J.D. (1972) Visual evoked potentials in the forebrain of the pigeon. Exp. Brain Res. 14: 198-209.


Delius, J.D. (1973) Agonistic behaviour of juvenile gulls, a neuroethological study. Animal Behav. 21: 236-246.

Delius, J.D. & Tarpy, R. (1974) Stimulus control of heart rate by auditory frequency and auditory pattern in pigeons. J. Exp. Anal. Behav. 21: 297-306.

Delius, J.D. & Vollrath, F.W. (1973) Rotation compensating reflexes independent of the labyrinth: neurosensory correlates in pigeons. J. Comp. Physiol. 83: 123-134.


Delius, J.D. (1974) Central neural mechanisms of vocalizations in birds. In: Lennenberg, E.H. (ed.) Language and brain. Neurosci. Res. Prog. Bull. 13: 257-260.

Delius, J.D. (1974) Hirnreizung, eine neuroethologische Methode. In: Immelmann, K. (ed.) Grzimeks Tierleben, Verhaltensforschung, pp. 263-276. Kindler, München.

Olsen, C., Delius, J.D. & Hockey, G.R. (1974) Brain temperature alterations and the retention of visual pattern discriminations in pigeons. Physiol. Behav. 13: 257-260,


Delius, J.D. (1975) Neuroetologia de la agresion en aves. In: Barbieri, F.D. & Legname, A.H. (eds.) Progresos en Biologia. pp. 205-213. Lillo, Tucuman.


Delius, J.D., Craig, B. & Chaudoir, C. (1976) Adrenocorticotropic hormone, glucose and displacement activities in pigeons. Z. Tierpsychol. 40: 183-193.

Delius, J.D., Perchard, R.J. & Emmerton, J. (1976) Polarized light discrimination by pigeons and an electroretinographic correlate. J. Comp. Physiol. Psychol. 90: 560-571.

Delius, J.D., Williams, A.C. & Wootton, R.T. (1976) Motivation depencence of brain self-stimulation in the pigeons. Behav. Processes 1: 15-27.

Vollrath, F.W. & Delius, J.D. (1976) Vestibular projections in the thalamus of pigeons. Brain Behav. Evol. 13: 58-68.


Delius, J.D. & Emmerton, J. (1978) Sensory mechanism related to homing in pigeons. In: Schmidt-Koenig, K. & Keeton, W.T. (eds.) Animal Migration, Navigation and Homing, pp. 35-41. Springer, Berlin.

Delius, J.D. & Emmerton, J. (1978) Stimulus dependent asymmetry in classical and instrumental discrimination learning by pigeons. Psychol. Rec. 28: 425-434.

Delius, J.D. & Habers, G. (1978) Symmetry: can pigeons conceptualize it? Behav. Biol. 22: 336-342

Ramirez, J.M. & Delius, J.D. (1978) Aggressive behaviour of pigeons: suppression by archistriatal lesions. Aggress. Behav. 5: 3-17.

Ramirez, J.M. & Delius, J.D. (1978) La projección de diapositivas y su ineficacia en la inducción de agresión por programas de refuerzo en la paloma. Rev. Psicol. Gen. Aplic. 33: 993-1010.


Delius, J.D. (1979) Review of: Olfaction and Behaviour: Mammalian Olfaction, Reproductive Processes and Behaviour, R. L. Doty (ed.). Behav. Process. 4: 594-609.

Delius, J.D. (1979) Review of: Quantitative Ethology, P. W. Colgan (ed.). Anim. Behav. 27: 636-637.

Delius, J.D. & Emmerton, J. (1979) Visual performance of pigeons. In: Granda, A.M. & Maxwell, J.H. (eds.), Neural Mechanisms of Behavior in the Pigeon, pp. 51-70. Plenum, New York.

Delius, J.D., Runge, T.E. & Oeckinghaus, H. (1979) Short-latency auditory projection to the frontal telencephalon of the pigeon. Exper. Neurol. 63: 594-609.

Ramirez, J.M. & Delius, J.D. (1979) Lesions of the limbic system: their effect on the agonistic behaviour of the pigeon. In: Obiols, J., Ballus, C., Gonzales Monclus, E. & Pujol, J. (eds.), Biological Psychiatry Today, II. World Congr. Biol. Psychiatry, Barcelona 1978, pp. 1232-1234. Elsevier, Amsterdam.

Ramirez, J.M. & Delius, J.D. (1979) Nucleus striae terminalis lesions affect agonistic behavior of pigeons. Physiol. Behav. 22: 871-875.


Delius, J.D. (1980) Animal learning research in the German-speaking area. German J. Psychol. 4: 152-174.

Delius, J.D. (1980) Symmetrieerkennung bei Tauben. In: M. Tücke, M. & Wolff, P. (eds.), Forschungsber. Fachb. III, iss. 16, pp. 81-89. Uni Osnabrück, Osnabrück.

Emmerton, J. & Delius, J.D. (1980) Wavelength discrimination in the visible and ultraviolet spectrum by pigeons. J. Comp. Physiol. 141: 47-52.

Parker, D.M. & Delius, J.D. (1980) The effect of wulst lesions on simple visual discrimination performance in the pigeon. Behav. Process. 5: 151-159.

Ramirez, J.M. & Delius, J.D. (1980) Behavioral effects of intracerebroventricular infusion of luteinizing hormone releasing hormone in pigeons. Bull. Psychon. Soc. 16: 128-130.


Delius, J.D. (1981) Senses of animals; chemical senses: mechanical senses; electromagnetic senses. In: McFarland, D. J. (ed.), The Oxford Companion to Animal Behaviour, pp. 60-63, 148-149, 498-501. Oxford University Press, London. Second edition, 1987.

Delius, J.D., Jahnke-Funk, E. & Hawker, A. (1981) Stimulus display geometry and colour discrimination learning by pigeons. Curr. Psychol. Res. 1: 203-214.

Deviche, P. & Delius, J.D. (1981) Short term modulation of domestic pigeon (Columba livia) behaviour by intraventricular administration of ACTH. Z. Tierpsychol. 55: 335-342.

Nau, F. & Delius, J.D. (1981) Discrepant effects of unilateral and bilateral forebrain lesions on the visual performance of pigeons. Behav. Brain Res. 2: 119-124.

Sieland, M., Delius, J.D., Rautenberg, K. & May, B. (1981) Thermo-regulation mediated by heart-rate changes in pigeons. J. Comp. Physiol. 144: 375-379.


Delius, J.D. (1982) Memory, a matter of fitness. Invited commentary on: Roitblat, H.L. Representation in animal memory. Behav. Brain. Sci. 5: 375-376.

Delius, J.D. & Nowak, B. (1982) Visual symmetry recognition by pigeons. Psychol. Res. 44: 199-212.

Delius, J.D. & Pellander, K. (1982) Hunger dependance of electrical brain self-stimulation in the pigeon. Physiol. Behav. 28: 63-66.

Hollard, V.D. & Delius, J.D. (1982) Rotational invariance in visual pattern recognition by pigeons and humans. Science, 218: 804-806.

Mestres, P. & Delius, J.D. (1982) A contribution to the study of the afferents to the pigeon optic tectum. Anat. Embryol. 165: 415-424.


Delius, J.D. (1983) Learning. In: Abs, M. (ed.), Physiology and Behaviour of the Pigeon, pp. 327-354. Academic Press, London.

Lombardi, C. & Delius, J.D. (1983) Pattern recognition invariance in pigeons. Behav. Anal. Lett. 3: 405.

Mallin, H. & Delius, J.D. (1983) Inter- and intraocular transfer of colour discriminations with mandibulation as an operant in the head-fixed pigeon. Behav. Anal. Lett. 3: 297-309.

Petrasch, E.W., Andres, K.H., Düring M. von & Delius, J.D. (1983) Morphologische Aspekte des Vitali-Organs bei der Taube. Anat. Anz. 153: 288.


Delius, J.D. (1984) Consequence contingencies and provenance partitioning. Invited commentary on: Skinner, B.F., The phylogeny and ontogeny of behavior. Behav. Brain Sci. 7: 685.

Delius, J.D. (1984) Review of: The Herring Gull and its Egg, G.P. Baerends & R.H. Drent (eds.). Anim. Behav. 32: 948-949

Delius, J.D., Jäger, R. & Friesel, M. (1984) Lateral telencephalic lesions affect visual discrimination in pigeons. Behav. Brain Res. 11: 249-258

Klinkenberg, T., Delius, J.D. & Emmerton, J. (1984) Classical heart-rate conditioning and differentiation of visual CS with an appetitive UCS in pigeons. Behav. Process. 9: 23-30.

Lombardi, C., Fachinelli, C. & Delius, J.D. (1984) Oddity of visual patterns conceptualized by pigeons. Anim. Learn. Behav. 12: 2-6.

Schwabl, U. & Delius, J.D. (1984) Visual length discrimination in the pigeon. Bird Behav. 5: 118-121.


Delius, J.D. (1985) Complex visual information processing in the pigeon. In: Ilyichev, V.D. & Gavrilov, V.M. (eds.), Acta XVIII Congr. Internat. Ornithol. vol. 2, pp. 804-811. Nauka, Moscow.

Delius, J.D. (1985) The peck of the pigeon: free for all. In: Lowe, C.F., Richelle, M., Blackman, D.E. & Bradshaw, C.M. (eds.), Behaviour Analysis and Contemporary Psychology, pp. 53-81. Erlbaum, New York.

Delius, J.D. (1985) Cognitive processes in pigeons. In: d'Ydewalle, G. (ed.), Cognition, Information Processing, and Motivation, pp. 3-18. Elsevier, Amsterdam.

Lombardi, C. & Delius, J.D. (1985) Mental zooming in pigeons. Behav. Proc. 10: 311.

Mestres, P., Rascher, K. & Delius, J.D. (1985) Scanning electron microscopy of the lateral ventricle of the pigeon brain. Scann. Electr. Microscop. 1: 239-246.


Delius, J.D. (1986) Genes y conducta, una breve narración. In: Sanmartin, J., Simon, V. & Garcia-Merita, M.L. (eds.), La Sociedad Naturalizada: Genética y Conducta, pp. 295-305. Tirant Lo Blanch, Valencia.

Delius, J.D. (1986) Komplexe Wahrnehmungsleistungen bei Tauben. Spektr. Wissensch. 4/86: 46-58. Reprinted in: Singer, W. (ed.): Kognition und Gehirn. Spektrum Verlag, Heidelberg (1990).

Delius, J.D. (1986) Pequena bandada de jilgueros europeos avistada en las afueras de Buenos Aires. Nuestras Aves 4: 6-8.

Lombardi, C., Delius, J.D. & Hollard, V.D. (1986) Conceptualizacion de una relación lógica en palomas. Rev. Latinoam. Psicol. 18: 277-297.

Ramirez, J.M. & Delius, J.D. (1986) The assessment of individual "aggressiveness" in pigeons by a variety of means. Aggress. Behav. 12: 13-20.

Schall, U. & Delius, J.D. (1986) Sensory input to the nucleus basalis prosencephali, a feeding-pecking centre in the pigeon. J. Comp. Physiol. A 159: 33-41.

Schall, U., Güntürkün, O. & Delius, J.D. (1986) Sensory projections to the nucleus basalis prosencephali of the pigeon. Cell Tiss. Res. 245: 539-546.


Delius, J.D. (1987) Clever pigeons and another hypothesis. Invited commentary on: E. Macphail, The comparative psychology of intelligence. Brain Behav. Sci. 10: 688-689.

Delius, J.D. (1987) Kognition bei Tieren. In: M. Amelang (ed.) Ber. 35. Kongr. Deutsch. Gesell. Psychol. Heidelberg 1986, vol. 2, pp. 135-144. Hogrefe, Göttingen.

Delius, J.D., & Hollard, V. (1987) Orientation invariance of shape recognition in forebrain-lesioned pigeons. Behav. Brain Res. 23: 251-259.

Delius, J.D., Lindenblatt, U. & Lombardi, C. (1987) Coupling between pecking and heartbeat in pigeons. J. Interdis. Cycle Res. 17: 243-251.

Delius, J.D. & Todt, E. (1987) Lernen. In: Immelmann, K., Scherer, K.R. & Vogel, C. (eds.) Funkkolleg Psychobiologie, iss. 7, pp. 11-68. Beltz, Weinheim. Veränderter Nachdruck in: Immelmann, K., Scherer, K.R., Vogel, C. & Schmoock, P. (eds.), Psychobiologie, Grundlagen des Verhaltens, pp. 328-374. Fischer, Stuttgart (1988).

Lindenblatt, U. & Delius, J.D. (1987) Apomorphine-induced pecking in pigeons classically conditioned to environmental cues. Psychopharmacol. 93: 223-225.


Delius, J.D. (1988) Preening and associated comfort behaviour in birds. Ann. New York Acad. Sci. 525: 40-55.

Güntürkün, O., Kesch, S. & Delius, J.D. (1988) Absence of footedness in domestic pigeons. Anim. Behav. 36: 602-603.

Lindenblatt, U. & Delius, J.D. (1988) Nucleus basalis prosencephali, a substrate of apomorphine-induced pecking in pigeons. Brain Res. 435: 1-8.

Lindenblatt, U. & Delius, J.D. (1988) Preventing a feature positive effect in pigeons. Amer. J. Psychol. 101: 193-206.

Lohmann, A., Delius, J.D., Hollard, V & Friesel, M. (1988) Discrimination of shape reflections and shape orientations by Columba livia. J. Comp. Psychol. 102: 3-13.

Lombardi, C.M. & Delius, J.D. (1988) Pattern recognition invariance in pigeons (Columba livia): outline, color and contrast. Int. J. Comp. Psychol. 2: 83-102.

Wright, A.A., Cook, R.G., Rivera, J.J., Sands, S.F. & Delius, J.D. (1988) Concept learning by pigeons: matching-to-sample with trial unique video picture stimuli. Anim. Learn. Behav. 16: 436-444.


Burg, B., Haase, C., Lindenblatt, U. & Delius, J.D. (1989) Sensitization to and conditioning with apomorphine in pigeons. Biochem. Pharmacol. Behav. 34: 59-64.

Delius, J.D. (1989) Of mind memes and brain bugs, a natural history of culture. In: Koch, W.A. (ed.) The Nature of Culture, pp. 26-79. Brockmeyer, Bochum. Spanische Fassung: Historia natural de la cultura. In: Sanchez Martin, J.R. (ed.), Etología y Psicología, pp. 149-183. Universidad País Vasco, San Sebastian: (1990). Überarbeitete Fassung: La psicobiología de la cultura. in: Peiró Silla, J.M. & Inigez, N. (ed.) Psicología y Sociedad, pp. 47-76. Real Sociedad, Valencia (2000).

Fersen, L. von & Delius, J.D. (1989) Long term retention of many visual patterns by pigeons. Ethology 82: 141-155.

Güntürkün, O., Emmerton, J. & Delius, J.D. (1989) Neural asymmetries and visual behaviour in birds. In: Lüttgau, H. & Necker, R. (eds.), Biological Signal Processing: Cellular and Integrative Aspects, pp. 122-145. Verlag Chemie, Weinheim.


Delius, J.D. (1990) Sapient sauropsids and hollering hominids. In: Koch, W.A. (ed.) Geneses of Language, pp. 1-29. Brockmeyer, Bochum.

Delius, J.D. (1990) Review of: Thought without Language, L. Weiskrantz (ed.). Ethology 85: 351-352.

Delius, J.D. (1990) Zur Naturgeschichte der Kultur: Gene und Meme. Z. Semiotik 12: 307-321. Veränderter Abdruck: Geist als Tradition: Kultur bei Mensch und Tier. In: Elepfandt, A. & Wolters, G. (eds.), Denkmaschinen? Interdisziplinäre Perspektiven zum Thema Geist und Gehirn, pp. 197-213. Universitätsverlag, Konstanz (1993).

Fersen, L. von, Wynne, C.D.L., Delius, J.D. & Staddon, J.E.R. (1990) Deductive reasoning in pigeons. Naturwiss. 77: 548-549.

Lombardi, C.M & Delius, J.D. (1990) Size invariance in visual pattern recognition by pigeons. In: Commons, M.L., Kosslyn, S.M., Herrnstein, R.J. & Mumford, D.B. (eds.), Pattern Recognition and Concepts in Animals, People and Machines, pp. 41-65. Erlbaum, Hillsdale, NJ.

Martinoya, C. & Delius, J.D. (1990) Perception of rotating spiral patterns by pigeons. Biol. Cybernetics 63: 127-134.


Delius, J.D. (1991) The nature of culture. In: Dawkins, M., Halliday, T. & Dawkins, R. (eds.), The Tinbergen Legacy, pp. 75-99. Chapman & Hall, London.

Fersen, L. von, Wynne, C.D.L., Delius, J.D & Staddon, J.E.R. (1991) Transitive inference formation in pigeons. J. Exper. Psychol. Anim. Behav. Proc. 17: 334-341.

Schall, U. & Delius, J.D. (1991) Grasping in the pigeon: control through sound and vibration feedback mediated by the nucleus basalis. Physiol. Behav. 50: 983-988.

Xia, L., Wynne, C.D.L., Münchow-Pohl, F. von & Delius, J.D. (1991) Psychobasic: a Basic dialect for the control of psychological experiments with the Commodore 64 and Dela interfacing. Behav. Res. Meth. Instr. Comp. 23: 72-76.


Delius, J.D. (1992) Categorical discrimination of objects and pictures by pigeons. Animal. Learn. Behav. 20: 301-311.

Delius, J.D. (1992) Review of: Cognitive Ethology, the Minds of Other Animals, C.A. Ristau (ed.). Ethology 90: 256-257.

Fersen, L. von & Delius, J.D. (1992) Schlußfolgerndes Denken bei Tauben. Spektr. Wiss. 7: 18-22.

Fersen, L. von, Emmerton, J. & Delius, J.D. (1992) Unexpected discrimination strategy used by pigeons. Behav. Proc. 27: 139-150.

Siemann, M. & Delius, J.D. (1992) Variability of forage pecking in pigeons. Ethology 92: 29-50.

Werner, U., Köppl U. & Delius, J.D. (1992) Transitive Inferenz bei nicht-verbaler Aufgabendarbietung. Z. angew. exper. Psychol. 39: 662-683.


Emmerton, J. & Delius, J.D. (1993) Beyond sensation: Visual cognition in pigeons. In: Zeigler, H.P. & Bischof, H.-J. (eds.), Vision, Brain and Behavior in Birds, pp. 377-390. MIT Press, Cambridge, MA.

Siemann, M. & Delius, J.D. (1993) Implicit deductive responding in humans, Naturwiss. 80: 364-366.

Wohlschläger, A., Jäger, R. & Delius, J.D. (1993) Head and eye movements in unrestrained pigeons (Columba livia). J. Comp. Psych., 107: 313-319.


Delius, J.D. (1994) Comparative cognition of identity. In: Bertelson, P., Eelen, P. & d'Ydevalle, G. (eds.), International Perspectives on Psychological Science, vol. 1: Leading Themes, pp. 25-40. Erlbaum, Howe.

Siemann, M. & Delius, J.D. (1994) Processing of hierarchic stimulus structures has advantages in humans and animals. Biol. Cybern. 71: 531-536.

Wright, A.A. & Delius, J.D. (1994) Scratch and match: pigeons learn matching and oddity with gravel stimuli. J. Exper. Psychol.: Anim. Behav. Proc. 20: 108-112.


Delius, J.D. (1995) Review of: Introduction to Animal Cognition, J.M. Pearce. Ethology: 101, 82-88.

Delius, J.D., Ameling, M., Lea, S.E.G. & Staddon, J.E.R. (1995) Reinforcement concordance induces and maintains stimulus associations in pigeons. Psychol. Rec., 45: 283-297.

Delius, J.D. & Hollard, V.D. (1995) Orientation invariance in pattern recognition by pigeons (Columba livia) and humans (Homo sapiens). J. Comp. Psychol., 109: 278-290.

Wynne, B. & Delius, J.D. (1995) Sensitization to apomorphine in pigeons: unaffected by latent inhibition but still due to classical conditioning. Psychopharmacol. 119: 414-420.


Delius, J.D. & Fersen, L. von (1996) Gedächtnis bei Tieren. In: Albert, D. & Stapf, K.H. (eds.) Enzyklopädie der Psychologie: Kognition, pp. 489-539. Hogrefe, Göttingen.

Förster, B., Gebhardt, R.-P., Lindlar, K., Siemann, M. & Delius, J.D. (1996) Mental rotation, a function of elementary stimulus discriminability. Perception 25: 1301-1316.

Siemann, M. & Delius, J.D. (1996) Influences of task concreteness upon transitive responding in humans. Psychol. Res. 59: 81-93.

Siemann, M., Delius, J.D., Dombrowski, D. & Daniel, S. (1996) Value transfer in discriminative conditioning with pigeons. Psych. Record 46: 707-728.

Siemann, M., Delius, J.D. & Wright, A.A. (1996) Transitive responding in pigeons: influences of stimulus frequency and reinforcement history. Behav. Processes 37: 185-195.

Wynne, B. & Delius, J.D. (1996) Frontal forebrain lesions: effects on the foraging and apomorphine pecking of pigeons. Physiol. & Behav. 59: 757-762.

Wynne, C.D.L., Staddon, J.E.R., Delius, J.D. (1996) Dynamics of waiting in pigeons. J. Exper. Anal. Behav. 65: 603-618.

Xia, L., Delius, J.D. & Siemann, M. (1996) A multistimulus, portable and programmable conditioning panel for pigeons. Behav. Res. Meth. Inst. Comp. 28: 49-54.


Delius, J.D. (1997) Review of: Thinking and Problem Solving, R.J. Sternberg (ed.). Ethology 103: 793-794.

Delius, J.D. (1997) Review of: Neuroethological Studies of Cognitive and Perceptual Processes, C.F. Moss & S.J Shettleworth (eds.). Animal Behaviour 54: 1039-1045.

Delius, J.D. & Siemann, M. (1997) Transitive responding in animals and humans: exaptation rather than adaptation? Behav. Processes 42: 107-137.


Delius, J.D. & Emmerton, J. (1998) Review of: Introduction to Animal Cognition, J.M. Pearce, second edition. Ethology, 104: 893-894.

Delius, J.D., Godoy, A. & Acerbo, M. (1998) Perspectivas para la biopsicología de los primeros decenios del siglo XXI. Anuario de Psicología, 29: 45-60.

Gargiulo, P.A., Siemann, M. und Delius, J.D. (1998) Shape discrimination in pigeons impaired by glutaminergic blockade of nucleus accumbens. Physiol. Behav. 63: 705-709.

Siemann, M. & Delius, J.D. (1998) Algebraic learning and neural network models for transitive and nontransitive responding in humans and animals. Eur. J. Cogn. Psychol. 10: 307-334.

Siemann, M., Fersen, L. von & Delius, J.D. (1998) Kognition bei Tieren. In: Irle, E. & Markowitsch, H.J. (eds.), Vergleichende Psychobiologie, Enzyklopädie der Psychologie, pp. 695-738. Hogrefe, Göttingen.


Aldavert-Vera, L., Costa-Miserachs, D., M., Divac, I. & Delius J.D. (1999) Presumed "prefrontal cortex" lesions in pigeons: effects on visual discrimination performance. Behav. Brain Res. 102: 165-170.

Delius, J.D. & Emmerton, J. (1999) Review of: Color Vision: Perspectives from Different Disciplines, W.G. Backhaus, R. Kliegel & S.J. Werner (eds.). Gruyter Berlin, 1998. Behav. Processes 47: 59-61.

Delius, J.D., Emmerton, J., Hörster, W., Jäger R. & Ostheim, J. (1999) Picture-object recognition in pigeons. Curr. Psychol. Cogn., 18, 621-656. Reprinted in: Fagot, J. (ed.) Picture Perception in Animals, pp. 3-35. Hove, Psychology Press (2000).

Godoy, A.M. & Delius, J.D. (1999) Sensitization to apomorphine in pigeons is due to conditioning, subject to generalisation but resistant to extinction. Behav. Pharmacol. 10: 367-378.


Delius, J.D. (2000) La psicobiología de la cultura. In: Peiró Silla, J.M. & Inigez, N. (eds.) Psicología y Sociedad, pp. 47-77. Real Sociedad, Valencia.

Delius, J.D., Jitsumori, M. & Siemann, M. (2000) Stimulus equivalencies through discrimination reversals. In: Heyes, C. & Huber, L. (eds.) Evolution of Cognition, pp. 103-122. MIT Press, Boston.

Fersen, L. von & Delius, J.D. (2000) Acquired equivalences between auditory stimuli in dolphins (Tursiops truncatus). Anim. Cognition, 3: 79-83.

Godoy, A.M., Siemann, M. & Delius, J.D. (2000) Dose shift effects on an apomorphine induced response. Medical Science Res. 28: 39-42.

Gollwitzer, P., Delius, J.D. & Oettingen, G. (2000) Motivation. In: Pawlik, K. & Rosenzweig, M.R. (eds.) International Handbook of Psychology, pp. 191-206. Sage, London.

Keller, S. & Delius, J.D. (2000) Farbdiskrimination bei Tauben mit Apomorphin als Verstärker. In: Bülthoff, H.H., Fahle, M., Gegenfurtner, K.R. & Mallot, H.A. (eds.) Beiträge zur 3. Tübinger Wahrnehmungskonferenz, p. 51. Knirsch, Kirchen.

Xia, L., Siemann, M. & Delius, J.D. (2000) Matching of numerical symbols with number of responses by pigeons. Anim. Cogn. 3: 35-43.


Acerbo, M.J., Krug, I., Gargiulo, P.A. & Delius, J.D. (2001) Differential action of NMDA glutamatergic blockade and dopamine stimulation in the nucleus accumbens septi in pigeons. In: Elsner, N. & Kreutzberg, G.W. (eds.) Göttingen Neurobiology Report 2001, p. 871, Thieme, Stuttgart.

Delius, J.D. (2001). The what and how of equivalencies. Invited comment on: F. Tonneau, Equivalence relations: a critical analysis. Eur. J. Behav. Anal., 2, 49-54.

Delius, J.D. & Godoy, A.M. (2001) Los procesos cognitivos en las aves y sus diversos orígenes. In: Mora, J.A. (ed.) Neuropsicología Cognitiva: Algunos Problemas Actuales, pp. 196-215. Aljibe, Málaga.

Delius, J.D., Keller, S. & Acerbo, M.J. (2001) Apomorphin und Psychostimulantiensucht. Sucht 47: 368-373.

Delius, J.D., Siemann, M., Emmerton, J. & Xia, L. (2001) Cognitions of birds as products of evolved brains. In: Roth, G. & Wulliman, M.F. (eds.) Brain Evolution and Cognition, pp. 451-490. Wiley, New York.

Fersen, L. von & Delius, J.D. (2001) Acquired equivalences between auditory stimuli in dolphins (Tursiops truncatus). Anim. Cognition 3: 79-83.

Gargiulo, P.A., Acerbo, M., Krug, I. & Delius, J.D. (2001) Action of NMDA glutamatergic and dopamine D1- and D-2 antagonists in the nucleus accumbens septi in pigeons. In: Elsner, N. & Kreutzberg, G.W. (eds.) Göttingen Neurobiology Report 2001, p. 874, Thieme, Stuttgart.

Keller, S. & Delius, J.D. (2001) Discriminative learning occasioned by the administration of a dopamine agonist. Psychopharmacol. 157: 320-323.

Jitsumori, M. & Delius, J.D. (2001) Object recognition and object categorization in animals. In: Matsuzawa, T. (ed.) Primate Origins of Human Cognition and Behavior, pp. 269-293. Springer, Tokyo.

Xia, L., Emmerton, J., Siemann, M. & Delius, J.D. (2001) Pigeons learn to link numerosities with symbols. J. Comp. Psychol. 115: 83-91.


Acerbo, M.J., Gargiulo, P.A., Krug, I. & Delius, J.D. (2002) Behavioral consequences of nucleus accumbens dopaminergic stimulation and glutamatergic blocking in pigeons. Behav. Brain Res. 103: 171-177.

Delius, J.D. (2002) Review of: Homogenidad y Nación. Con un Estudio de Caso: Argentina, Siglos XIX y XX, M. Quijada, C. Bernand & A. Schneider (eds.). Ethn. Racial Studies, 25: 340-344.

Delius, J.D. (2002) Inteligencias y cerebros, un enfoque comparativo y evolutivo. In: Morgado Bernal, I. (ed.) Emoción y Conocimiento, la Evolución del Cerebro y la Inteligencia, pp. 17-65. Tusquets, Barcelona.

Delius, J.D., Acerbo, M.J., Keller, S., Godoy, A.M. & Delius, J.D. (2002) Drogeninduziertes Lernen: Sensitivierung bei Apomorphin. Neuroforum 8: 261-266.

Delius, J.D. & Delius, J.A.M. (2002) Biopsychologie des Lernens. In: Elbert, T. & Birbaumer, N. (eds.) Biologische Grundlagen der Psychologie: Enzyklopädie der Psychologie, pp. 445-518. Hogrefe, Göttingen.

Hörster, W., Krumm, E., Mohr, C. & Delius, J.D. (2002) Conditioning the pecking motions of pigeons. Behav. Processes, 58: 27-43.

Jitsumori, M., Siemann, M., Lehr, M. & Delius, J.D (2002) A new approach to the formation of equivalence classes in pigeons. J. Exper. Anal. Behav. 78: 397-408.

Keller, S., Delius, J.D. & Acerbo, M. (2002) Apomorphine sensitization: evoking conditions, context dependence, effect persistence and conditioned nature. Behav. Pharmacol. 13: 1-14.

Melsbach, G., Siemann, M. & Delius, J.D. (2002) Right or wrong, familiar or novel? Pictorial list discrimination learning in humans. Exper. Psychol. 50: 285-297.

Parker, D.M., Leydel, R., Delius, J.D. & Williams, M. (2002) A critical duration effect in suprathreshold pattern discrimination. Perception 31, Suppl.: 43.


Acerbo, M.J., Godoy, A.M. & Delius, J.D. (2003) Haloperidol blocks the acquisition but not the retrieval of a conditioned sensitization to apomorphine. Behav. Pharmacol. 14: 631-640.

Cleaveland, M.J., Jäger, R., Rößner, P. & Delius, J.D. (2003) Ontogeny has a phylogeny: background to adjunctive behaviors in pigeons and budgerigars. Behav. Proc. 61: 143-158.

Hörster, W., Xia, L. & Delius, J.D. (2003) Linkages between the pecking and respiration rhythms of pigeons. Bird Behav. 15: 33-42.


Acerbo, M.J. & Delius, J.D. (2004) Behavioral sensitization to apomorphine in pigeons (Columba livia): blockade by the D1 dopamine antagonist SCH-23390. Behav. Neurosci. 118: 1080-1088.

Acerbo, M.J. Lee, J.M. & Delius, J.D. (2004) Sensitization to apomorphine: effects of dizocilpine NMDA receptor blockades. Behav. Brain Res. 151: 201-208.


Acerbo, M.J., Vyboh, P., Kostál, L., Kubíková, L. & Delius, J.D. (2005) Repeated apomorphine administration alters dopamine D1 and D2 receptor densities in pigeon basal telencephalon. Exp. Brain Res. 160(4): 533-537.

Gargiulo, P.A., Acerbo, M.J., Krug, I. & Delius, J.D. (2005) Cognitive effects of dopaminergic and glutamatergic blockade in nucleus accumbens in pigeons. Pharmacol. Biochem. Behav. 81: 732-739.

Wright, A.A. & Delius, J.D. (2005) Learning processes in matching and oddity: the oddity preference effect and sample reinforcement. J. Exper. Psychol. Anim. Behav. Proc. 31: 425-432.


Delius, J.D. (2006) Conditioning induced by a drug. In R. Truzoli, G. Leader & P. Reed (Eds.), Behaviour analysis in Europe (Proceedings of the Third Conference of the European Association for Behaviour Analysis) (pp. 32). Trento: Editrice.

Delius, J.D. (2006, latest update 2014) Reseña acerca de los campos que circundan la antigua estancia Monte Molina, Saladillo, Córdoba [History of the camps around the ancient estancia Monte Molino, southeastern Córdoba province, Argentina]. Website

Delius, J.D. & Delius, J.A.M. (2006) Intelligences and brains: A comparative and evolutionary birds' eye view. In: Wasserman, E.A. & Zentall, T.R. (eds.) Comparative Cognition: Experimental Explorations of Animal Intelligence, pp. 555-579. Oxford University Press, London.

Raabe, S., Höger, R., & Delius, J.D. (2006) Sex differences in mental rotation strategy. Percept. Motor Skills 103: 917-930.


Delius, J.D. & Delius, J.A.M. (2012) Intelligences and brains: An evolutionary bird’s eye view. In: Zentall, T.R. & Wasserman, E.A. (eds.) The Oxford Handbook of Comparative Cognition, pp. 693-717. Oxford University Press, New York.

Delius, J.D. & Delius, J.A.M. (2012) Erik Pringsheims Tod in Argentinien – ein bayrisch-puntanisch-schottisches Drama. In: Sprecher, T., Wimmer, R. & Wißkirchen, H. (eds.) Thomas Mann Jahrbuch, Bd. 25, S. 297-313. Vittorio Klostermann Verlag, Frankfurt/Main. Volltext


Delius, J.D., Acerbo, M., Krug, I., Lee, J. & Leydel, R. (2014) Sensitization to apomorphine in pigeons: The product of a multifactor conditioning process. Behav. Pharmacol., in press. Advance online publication. doi: 10.1097/FBP.0000000000000087

Unprinted Research

Delius, J.D. (2000) Garzas azules, Egretta caerulea, avistadas en el litoral bonaerense, Argentina. Available at

Delius, J.D. & Acerbo, M. (2014) The effects of apomorphine in pigeons: Some supplementary notes. Full text


Updated 12/2014

© 2014 Juan D. Delius, Konstanz

Contact: juan.delius(at)

Note. No responsibility can be taken for the content of external links.