| Geberzahn, & Hultsch (2003): Long-time storage of song-types in birds: evidence form |
| interactive playbacks. Proc. Royal Society (London) 270: 1085-1090. |
| |
| Geberzahn, N. & H. Hultsch (2004) - Rules of song development and use in birds with large |
| signal repertoires. Annals of the Brazilian Academy of Sciences 76: 209-218. |
| |
| Geberzahn, N., Hultsch, H. & D. Todt (2002) - Latent song type memories are accessible through |
| auditory stimulation. Animal Behaviour 64: 783-790. |
| |
| Hughes, M., Hultsch, H. & Todt, D. (2001) - How do birds learn when they learn to sing ? |
| Imitation and invention in nightingale song. Ethology 108: 35-48. |
| |
| Hultsch, H. & D. Todt (1986) Signal Matching: Zeichenbildung durch mustergleiches Antworten. |
| Z. f. Semiotik 8: 223-244. |
| |
| Hultsch, H. & D. Todt (1989a) Memorization and reproduction of songs in nightingales |
| (Luscinia megarhynchos): Evidence for package formation. J. Comp. Physiol. A165: 197-203. - |
| |
| Hultsch, H. & D. Todt (1989b) Context memorization in the song learning of birds. |
| Naturwissenschaften 76: 584-586.- |
| |
| Hultsch, H. (1992) Time window and unit capacity: dual constraints on the acquisition of serial |
| information in songbirds. J. Comp. Physiol. 170: 275-280. |
| |
| Hultsch, H. & D. Todt (1992a): The serial order effect in the song acquisition of birds: relevance |
| of exposure frequency to song models. Animal Behaviour 44: 590-592. |
| |
| Hultsch (1993a) Ecological versus psychobiological aspects of learning. Etologia 3: 309-323. |
| |
| Hultsch, H. (1993b) Tracing the memory mechanisms in birdsong acquisition. Neth. J. Zool. 43: 155-171. |
| |
| Hultsch, H. & D. Todt (1996b) Discontinuos and incremental processes in the song learning of |
| birds: evidence for a primer-effect. J. Comp. Physiol., 179: 219-226. |
| |
| Hultsch, H. & D. Todt (1998) Hierarchical learning and development of song. In: Pepperberg, I., |
| Balda, R. & E. Kamil (eds.): Animal Cognition in Nature. Academic Press, N.Y. : pp. 275-303. |
| |
| Hultsch, H., Mundry, R. & D. Todt (1999). Learning, representation & retrieval of rule-related |
| knowledge in song systems. In: Friederici, A. & Menzel, R. (eds). Learning: Rule |
| Extraction and Representation. Berlin & New York: Walter de Gruyter, pp 87-99. |
| |
| Hultsch, H., Schleuss, F. & Todt, D. (1999). Auditory-visual stimulus pairing enhances perceptual |
| learning in a songbird. Animal Behaviour, 58: 112-134. |
| |
| Hultsch, H. & Todt, D. (2001) - Trajectories of Song Development. Language Acquisition & |
| Acquisition Disorders 24: 309-331. |
| |
| Hultsch, H. & D. Todt (2003) - Approaches to the mechanisms of song memorization and singing |
| suggest a procedural memory. Annals of the Brazilian Academy of Sciences 76: 219-230. |
| |
| Hultsch H & D Todt (2004) Learning to sing. In: Nature's Music - The Science of Birdsong; |
| Marler P & H Slabbekorn (eds.), Elsevier Academic Press, Amsterdam, pp.80-107. |
| |
| Kipper, S, Mundry, R., Hultsch, H & D Todt (2004): Long-term persistence of song performance |
| rules in nightingales: a longitudinal field study on repertoire size and composition. |
| Behaviour 141: 371-390. |
| |
| Todt, D. (1975a) - Social learning in grey parrots (Psittacus erithacus). Zeitschrift für |
| Tierpsychologie 39: 178-188. |
| |
| Todt D. (1975b) Short-term inhibition of outputs occuring in the vocal behaviour of Blackbirds. |
| Journal comparative Physiology 98: 289-306. |
| |
| Todt, D. & A. Fiebelkorn (1979) Display, timing and function of wing movements |
| accompanying antiphonal duets of Cichladusa guttata. Behaviour 25: 42-58. |
| |
| Todt, D., Hultsch, H., & D. Heike (1979) Conditions affecting song acquisition in nightingales. |
| Z. f. Tierpsychol. 51: 23-35. |
| |
| Todt, D. (1986) Hinweischarakter & Mittlerfunktion von Verhalten. Z. Semiotik 8: 183-232. |
| |
| Todt, D. & H. Hultsch (1992) Birdsong: Variations that follow Rules. Behavior & Brain Sciences 15: 190-192. |
| |
| Todt, D., & J. Böhner. (1994). Former experience can modify social selectivity during song |
| learning in the nightingale (Luscinia megarhynchos). Ethology 97: 169-176. |
| |
| Todt, D. & H. Hultsch (1996b). Acquisition and performance of repertoires: Ways of coping with |
| diversity and versatility. In: Kroodsma, D.E. & Miller, E.H. (eds). Ecology and evolution of |
| communication. Ithaka, NY; Cornell University Press. Pp. 79-96. |
| |
| Todt, D. & H. Hultsch (1998). How songbirds deal with large amounts of serial information: |
| retrieval rules suggest a hierarchical song memory. Biological Cybernetics 79:487-500. |
| |
| Todt, D. & H. Hultsch (1999) How nightingales develop their interactional competence. Ostrich 69: 122-137. |
| |
| Todt, D. & M. Naguib (2000). Vocal interactions in birds: The use of song as a model in |
| communication. Advances in the Study of Behaviour 29: 247-296. |
| |
| Todt, D., Cirillo, J. ,Geberzahn, N. & F.Schleuss (2000) Vocal imitation in birds. Cybernetics and |
| Systems 32: 257-283. |
| |
| Todt, D. & H. Hultsch (2002) - Social aspects of vocal learning and song use in birds. Proc. 23rd |
| Int. Ornithol. Congress, Beijing, Vol. 3: 112-118.- |
| |
| Todt, D. & N. Geberzahn (2003) -Age-dependent effects of song exposure: song crystallization |
| sets a boundary between fast and delayed vocal imitation. Animal Behaviour 65: 971-979.- |
| |
| Todt, D. (2004) - From birdsong to speech. Anais Academia Brasiliera de Ciencies 76: 201-208. |
