Ritschard, M.; van Oers, K.; Naguib, M.; Brumm, H.: Song amplitude of rival males modulates the territorial behaviour of great tits during the fertile period of their mates. Ethology 118 (2), S. 197 - 202 (2012)
Brumm, H.; Ritschard, M.: Song amplitude affects territorial aggression of male receivers in chaffinches. Behavioral Ecology 22 (2), S. 310 - 316 (2011)
Ritschard, M.; Brumm, H.: Effects of vocal learning, phonetics and inheritance on song amplitude in zebra finches. Animal Behaviour 82 (6), S. 1415 - 1422 (2011)
Ritschard, M.; Laucht, S.; Dale, J.; Brumm, H.: Enhanced testosterone levels affect singing motivation but not song structure and amplitude in Bengalese finches. Physiology & Behavior 102 (1), S. 30 - 35 (2011)
Ritschard, M.; Logtmeijer, P.; Taeschler, A.: Two observations of Malayan night-heron Gorsachius melanolophus from West Bengal, India. Journal of the Bombay Natural History Society 105 (1), S. 97 - 98 (2008)
Ritschard, M.; Taschler, A.: A recent observation of white-headed duck Oxyura leucocephala at Gajaldoba Barrage, West Bengal, India. Journal of the Bombay Natural History Society 105 (1), S. 95 - 95 (2008)
Ein neuartiges chemisches Markierungsverfahren ermöglicht es, biologische Aktivitäten in Zellen aufzuzeichnen und zu einem späteren Zeitpunkt zu analysieren