Research interests

  • Social learning and cognition
  • Juvenile development
  • Behavioral ecology
  • Social behavior
  • Flower-visiting bats




Scientific projects

Social learning describes the acquisition of knowledge from other animals. Horizontal social learning (from adult to adult) influences the foraging behavior of several animalivorous and frugivorous bat species, but there is little knowledge whether flower-visiting nectarivorous bats (Phyllostomidae: Glossophaginae) can acquire foraging related information from conspecifics as well. Moreover, for bats in general, there is almost nothing known about the presumably important processes of vertical social learning from parents to offspring.

Nectarivorous Pallas’ Long-tongued Bats (Glossophaga soricina) are well suited to study mechanisms of social learning. Adult individuals visit an enormous number of flowers each night and have to make just as many foraging decisions in which they might incorporate socially gained information (i.e. when, where, what and how to feed). In addition, juvenile bats should have ample opportunities to socially learn about food during ontogeny, e.g. via maternally provided nectar, or from following mothers on their first foraging flights.

In my dissertation project, I use an experimental approach to investigate the extent and mechanisms of social learning in bats of different age. Inter alia, my research comprises experiments on mouth-to-mouth feeding behavior in mother-pup pairs and its potential implications on vertical social learning of dietary preferences in non-volant pups. I further developed artificial flowers with RFID system to record the incipient foraging behavior of recently volant pups and their mothers in the wild and I also work on adult individuals (e.g. horizontal social learning of novel flower types; playback experiments on mediating cues). Experiments are performed with bats that are temporarily kept in captivity as well as with free living individuals. Fieldwork of the ongoing study is conducted in Santa Rosa National Park, Costa Rica.

More information about my research projects can be found at


Rose A, Wöhl S, Bechler J, Tschapka M, Knörnschild M (2019) Maternal mouth-to-mouth feeding behaviour in flower-visiting bats, but no experimental evidence for transmitted dietary preferences. Behavioural processes 165:29-35,

Engler S, Rose A*, Knörnschild M* (2017) Isolation call ontogeny in bat pups (Glossophaga soricina). Behaviour, 154:267-286. *Joint senior authors.

Rose A, Brändel SD, Cvecko P, Engler S, Hiller T, Knörnschild M, Tschapka M (2017) New records of hypopigmentation in two neotropical phyllostomid bat species with different roosting habits (Uroderma bilobatum, Glossophaga soricina). Mammalia, online first.

Rose A, Kolar M, Tschapka M, Knörnschild M (2016) Learning where to feed: The use of social information in flower-visiting Pallas’ long-tongued bats (Glossophaga soricina). Animal Cognition, 19:251-262

Conference contributions

Rose A, Tschapka M, Knörnschild M (2019) Flying Solo: Juvenile Flower-visiting Bats Perform First Foraging Flights without their Mother. 18th International Bat Research Conference (18th IBRC), 28 July – 1 August 2019, Phuket, Thailand

Rose A, Knörnschild M (2018) Social learning by following? Testing for communal foraging of mother-pup pairs in a flower-visiting bat species. European Conference on Behavioural Biology, 09 – 12 August 2018, Liverpool, United Kingdom

Rose A, Knörnschild M (2018) Exploring social learning during ontogeny: Do juvenile flower-visiting bats follow their mothers on first foraging flights? Deutsches Treffen für Fledermausforschung, 12 – 14 January 2018, Heidesee, Germany

Rose A, Knörnschild M (2016) Maternal nectar provisioning and its implications for vertical social learning of dietary preferences in a flower-visiting bat. European Conference on Behavioural Biology, 12 – 15 July 2016, Vienna, Austria

Rose A, Knörnschild M (2015) Vertical learning of dietary preferences in flower-visiting Pallas’ Long-tongued Bats. Graduate Meeting: Studying Animal Behaviour in the Field. 17 – 19 September 2015, Grünau im Almtal, Austria

Rose A, Knörnschild M (2014) Social learning facilitates foraging behavior in Pallas’ Long-tongued Bats. European Conference on Behavioural Biology, 17 – 20 July 2014, Praha, Czech Republic

Cvecko P, Rose A, Brändel SD, Hiller T, Tschapka M (2014) Activity pattern and foraging behavior of the tent-making bat (Uroderma bilobatum) in Panama. Conference of the Society for Tropical Ecology (GTÖ), 25 – 28 February 2014, Freising, Germany


Andreas Rose
Institute of Evolutionary Ecology
and Conservation Genomics
University of Ulm
Albert-Einstein-Allee 11
89081 Ulm
Tel.: /
Email: andreas.rose()