| Brumm, H. & D. Todt (2003) - Facing the rival: directional singing behaviour in nightingales. Behaviour 140: 43-53.- |
| |
| Brumm, H. & D. Todt (2004) - Male-male vocal interactions and amplitude regulation in |
| songbirds. Animal Behaviour 67: 281-286.- |
| |
| Geberzahn, N. (2003) - Is quantity of song use in adult birds related to singing during |
| development? Behaviour 140: 593-602. |
| |
| Geberzahn, N & H 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 (2003) - Rules of song development and use in birds with large |
| signal repertoires. Annals of the Brazilian Academy of Sciences 76: 209-218. |
| |
| Hultsch, H. (1980) - Beziehungen zwischen Struktur, zeitlicher Variabilität und sozialem Einsatz |
| des Gesangs der Nachtigall (Luscinia megarhynchos), PhD Thesis, Free University of Berlin. |
| |
| Hultsch, H. & D. Todt (1981) Repertoire sharing and song-post distance in nightingales |
| Luscinia megarhynchos. Behav. Ecol. Sociobiol. 8: 83-188 |
| |
| Hultsch, H. & D. Todt (1982) Temporal performance roles during vocal interactions in |
| nightingales (Luscinia megarhynchos). Behav. Ecology & Sociobiology 11: 253-260. |
| |
| Hultsch, H. & D. Todt (1984) Spatial proximity between allies: a territorial signal tested in |
| monogamous duet singers. Behaviour 91: 286-293. |
| |
| Hultsch, H. & D. Todt (1986) Signal Matching: Zeichenbildung durch mustergleiches Antworten. |
| Z. f. Semiotik 8: 223-244. |
| |
| 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 (1996a) Rules of parameter variation in homotype series of birdsong can |
| indicate a 'sollwert' significance. Behavioral Processes 38: 175-182. |
| |
| 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., 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. & D. Todt (2004a) - Approaches to the mechanisms of song memorization and |
| singing suggest a procedural memory. Annals of the Brazilian Academy of Sciences 76: 219-230. |
| |
| 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. |
| |
| Kipper, S., Mundry, R., Sommer, C., Hultsch, H., & D. Todt (2005) - Larger nightingales |
| (Luscinia megarhynchos) have larger song repertoires and arrive earlier on |
| their breeding grounds Animal Behaviour (in press). |
| |
| Mundry, R. (1999): Testing related samples with missing values: a permutation approach. |
| Animal Behav. 58: 1143-1153. |
| |
| Mundry R & Todt D (2000) - Automated measurement of tonal vocalisations: methods and |
| examples of their application. Measuring Behaviour 3: 47-52. |
| |
| Mundry, R. & C. Sommer (2004) - Tonal vocalisations: an approach to semi-automatic analyses |
| and examples of their application. Anais Academia Brasiliera de Ciencies 76: 284-288.- |
| |
| Naguib, M. (1999): Effects of song overlapping and alternating in nocturnally singing |
| nightingales, Anim. Behav. 58: 1061-1067. |
| |
| Naguib, M. & D.Todt (1997) Effects of dyadic vocal interaction on additional conspecific |
| receivers in nightingales. Animal Behaviour 54: 1535-1543. |
| |
| Naguib, M. & D. Todt (1998) Recognition of neighbors' song in a species with a large and |
| complex song repertoire. J. Avian Biology 29: 155-160. |
| |
| Naguib, M. , Fichtel, C. & D. Todt (1999) Nightingales respond more strongly to vocal leaders of |
| simulated dyadic interactions. Proc. Royal Society London, 266: 1-6. |
| |
| Naguib, M., Mundry, R., Ostreiher, R.., Hultsch, H. Schrader, L. & D. Todt (1999): Cooperatively |
| breeding Arabian babblers (Turdoides squamiceps) call differently when mobbing different |
| predator-induced situations. Behavioral Ecology 29: 636-640. |
| |
| Naguib, M., Altenkamp, R. & Griessmann, B. (2001) - Nightingales in space: song and extra |
| territorial forays in radio tagged song birds. J. Ornithol. 142: 306-312. |
| |
| Naguib, M., Hammerschmidt, K. & Wirth, J. (2001) - Microgeographic variation, habitat effects, |
| and individual cues in calls of chiffchaffs. Ethology 107: 341-355. |
| |
| Naguib, M., Mundry, R., Hultsch, H. & D. Tod t (2002) - Responses to playback of whistle songs |
| and normal songs in male nightingales: effects of song category, whistle pitch, and distance. |
| Behav. Ecol. & Sociobiol. 52: 215-223. |
| |
| Riebel, K. & Todt, D. (1997). Light flash stimulation alters the nightingale's singing style: |
| implications for song control mechanisms. Behaviour 134: 1-20. |
| |
| 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. & J. Wolffgramm (1975) Überprüfungen von Steuerungssystemen zur Strophenwahl der |
| Amsel durch digitale Simulierung. Biological Cybernetics 17: 109-127. |
| |
| Todt, D. (1976) - Spontaneous recombinations of vocal patterns in grey parrots (Psittacus erithacus). |
| Naturwissenschaften 62: 399-401. |
| |
| 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. & H. Hultsch (1980) Functional aspects of sequence and hierarchy in song structure. |
| Acta Congr. Internat. Ornithologici XVII: 663-670. |
| |
| Todt, D. (1981) On functions of vocal matching: effect of counter replies on song post choice |
| and singing. Ethology 57: 73-93. |
| |
| Todt, D., Hultsch, H. & F. Duvall (1981). - Behavioural significance and social function of vocal |
| and non-vocal displays in monogamous duet-singers. Zool. Beiträge 27: 422-448. |
| |
| Todt, D. & H. Hultsch (1982) Impairment of vocal signal exchange in the monogamous |
| duet-singer Cossypha heuglini (Turdidae): Effects of pairbond maintenance. Ethology 60: 265-274. |
| |
| 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. & H. Hultsch (1993) Biologische Grundlagen des Dialogs. In: Wessel, K. F. & |
| D. Naumann: Kommunikation und Humanontogese; Kleine Verlag, Bielefeld. pp: 53-76. |
| |
| 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. & 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. & S. Kipper (2003) - Der Begriff 'Kommunikation' in den Biowissenschaften. |
| Signifikation: Beiträge zur Kommunikationswissenschaft 5: 29-59. |
| |
| Todt, D. (2004) - From birdsong to speech. Anais Academia Brasiliera de Ciencies 76: 201-208. |
| |
| Wolffgramm, J. & D. Todt (1982) Pattern and time specificity in vocal responses of European |
| Blackbirds Turdus merula. Behaviour 81: 264-286. |
