Personal profile
Primary fields of research
I am interested in many different aspects of bird movements with focus on migratory strategies and patterns, including long-distance migrants as well as dispersal in sedentary birds.
I am project coordinator for several national and international research projects including bird ringing.
Curation
Curatorial Assistant for the bird ringing data collection regarding Denmark, the Faroe Islands and Greenland. Responsibilities for developing strategy plans and project coordinating etc.
Other duties
Delegate for Zoological Museum at EURING (http://www.euring.org/)
Member of the British Trust for Ornithology (BTO)
Member of the Danish Ornithological Society (DOF)
Member of the African Bird Club (ABC)
Member of the Oriental Bird Club (OBC)
Keywords
- Faculty of Science
Collaborations and top research areas from the last five years
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A decade of West Nile virus surveillance in the host and vector populations of Denmark, 2011 to 2023
Olesen, A. S., Polacek, C., Bøtner, A., Bødker, R., Madsen, J. J., Thorup, K., Belsham, G. J., Rasmussen, T. B. & Lohse, L., 2025, In: Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin. 30, 37, 15 p., 2400791.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile1 Citation (Scopus)3 Downloads (Pure) -
Epidemiological and Virological investigation of high pathogenicity avian influenza outbreaks in Danish poultry during 2020/2021 and 2021/2022
Liang, Y., Boklund, A. E., Larsen, L. E., Breum, S., Giese, S., Hammer, A. S., Kirkeby, C. T., Krog, J. S., Liu, Y., Madsen, J. J., Therkildsen, O. R., Ovesen, M. T., Quaade, M. L., Trebbien, R., Mortensen, S. & Hjulsager, C. K., 2025, In: Research in Veterinary Science. 189, 10 p., 105618.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile2 Citations (Scopus)8 Downloads (Pure) -
Pathogenic bacterial taxa constitute a substantial portion of fecal microbiota in common migratory bats and birds in Europe
Poosakkannu, A., Xu, Y., Suominen, K. M., Meierhofer, M. B., Sørensen, I. H., Madsen, J. J., Plaquin, B., Guillemain, M., Joyeux, E., Keišs, O., Lilley, T. M., Lehikoinen, A. & Pulliainen, A. T., 2025, In: Microbiology Spectrum. 13, 3, 19 p., e01948-24.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile5 Citations (Scopus)9 Downloads (Pure) -
Mortality rates in the national bird ringing programme of Denmark and the Faroe Islands
Romdal, T. S., Madsen, J. J., Tøttrup, A. P. & Thorup, K., 2024, In: Bird Study. 71, 2, p. 154-164 11 p.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile2 Citations (Scopus)20 Downloads (Pure) -
Dansk Ringmærkning (2022): Statens Naturhistoriske Museums ringmærkningsaktiviteter i Danmark
Madsen, J. J., Lausten, J. M., Johannisson, A., Andersen, S. A. M., Hansen, J. S., Romdal, T. S., Thorup, K. & Tøttrup, A. P., 2023, In: Fugleåret 2022. 17, p. 263-272 10 p.Research output: Contribution to journal › Journal article › Communication
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Molecular characterization of highly pathogenic avian influenza viruses h5n6 detected in denmark in 2018–2019
Liang, Y., Krog, J. S., Ryt-Hansen, P., Pedersen, A. G., Kvisgaard, L. K., Holm, E., Nielsen, P. D., Hammer, A. S., Madsen, J. J., Thorup, K., Larsen, L. E. & Hjulsager, C. K., 2021, In: Viruses. 13, 6, 1052.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile17 Citations (Scopus)66 Downloads (Pure) -
Haematology, blood biochemistry, parasites and pathology of common eider (Somateria mollisima) males during a mortality event in the Baltic
Garbus, S.-E., Christensen, J. P., Buchmann, K., Jessen, T. B., Lyngs, P., Jacobsen, M. L., Garbus, G., Lund, E., Garbus, P. G., Madsen, J. J., Thorup, K. & Sonne, C., 2019, In: Science of the Total Environment. 683, p. 559-567Research output: Contribution to journal › Journal article › Research › peer-review
11 Citations (Scopus) -
Screening for multiple tick-borne pathogens in Ixodes ricinus ticks from birds in Denmark during spring and autumn migration seasons
Klitgaard, K., Højgaard, J., Isbrand, A., Madsen, J. J., Thorup, K. & Bødker, R., 2019, In: Ticks and Tick-borne Diseases. 10, 3, p. 546-552 7 p.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile35 Citations (Scopus)88 Downloads (Pure)