Publications
Articles in Peer-reviewed Journals
Mentees are underlined. PDFs via links or by request, here. Google Scholar, here. 
0000-0002-0154-2536
27. Gillies, N., S. Descamps, N.P. Huffeldt, [...], S.C. Patrick. (2026) Evidence for latitude-driven changes in diel rhythms in a wide-ranging seabird. Proceedings B 293: 20252023. (31 authors) Link. PDF
26. Huffeldt, N.P., F. Fossøy, L. Hedh, A. Moksnes, K.R.S. Snell, B.G. Stokke, C. Stolz, K. Thorup, and S. Sjöberg. (2025) Flexibility in the diel migratory schedule of an Arctic songbird despite robust 24-h activity rhythms across the annual cycle. Journal of Avian Biology 2025: e03483. Link. PDF
25. Huffeldt, N.P., F.M. van Beest, H.L. Kenyon, J. Danielsen, and T. Guilford. (2024) Activity of predators in seabird colonies decreases during the darkest compared to the brightest phase of the diel cycle below, but not above, the Arctic circle. Arctic, Antarctic, and Alpine Research 56: 2367262. Link. PDF
24. Huffeldt, N.P., G. Bianco, J.M.V. Floyd, and S. Åkesson. (2024) Short photoperiods end autumn migration in a naïve diurnal migrant. Animal Behaviour 215: 23-29. Link. PDF
23. Huffeldt, N.P., M. Ballesteros, B. Helm, J.F. Linnebjerg, F.R. Merkel, A. Mosbech, and M. Frederiksen. (2024) Thick-billed murres in breeding pairs migrate and overwinter far apart but in similar photic environments. Journal of Ornithology 165: 881–888. Link. PDF
22. Cruz-Flores, M., [...], N.P. Huffeldt, [...], and J. Fort. (2024) Spatial distribution of selenium-mercury in Arctic seabirds. Environmental Pollution 343: 123110. (37 authors) Link
21. Patterson, A., [...], N.P. Huffeldt, [...], and K.H. Elliott. (2022) Foraging range scales with colony size in high-latitude seabirds. Current Biology 32: 3800-3807.e3. (30 authors) Link
20. Chastel, O., J. Fort, J.T. Ackerman, [...], N.P. Huffeldt et al. (2022) Mercury contamination and potential health risks to Arctic seabirds and shorebirds. Science of the Total Environment 844: 156944. (59 authors) Link
19. Huffeldt, N.P. (2021) Importance of photic constraints depends on the population. Trends in Ecology and Evolution 36: 480-481. Link
18. Huffeldt, N.P., J.F. Linnebjerg, J. Fort, F.R. Merkel, and M. Frederiksen. (2021) Habitat when foraging does not explain temporal segregation by sex in a breeding seabird. Marine Biology 168: 152. Link
17. Huffeldt, N.P., A. Tigano, K.E. Erikstad, W. Goymann, S. Jenni-Eiermann, T. Moum, and T.K. Reiertsen. (2021) The relationship between daily behavior, hormones, and a color dimorphism in a seabird under natural continuous light. Hormones and Behavior 130: 104930. Link
16. Frederiksen, M., S. Descamps, K.H. Elliott, A.J. Gaston, N.P. Huffeldt, Y. Kolbeinsson, J.F. Linnebjerg, E. Lorentzen, F.R. Merkel, H. Strøm, and T.L. Thórarinsson. (2021) Spatial variation in vital rates and population growth of thick-billed murres in the Atlantic Arctic. Marine Ecology Progress Series 672: 1-13. Link. PDF
15. Merkel, F.R., J.F. Linnebjerg, O.G.N. Andersen, N.P. Huffeldt, T. Jansen, and M. Frederiksen. (2021) Changing winter diet of thick-billed murres Uria lomvia in Southwest Greenland, 1990s versus 2010s. Canadian Journal of Zoology 99: 1080-1088. Link. PDF
14. Albert, C., [...], N.P. Huffeldt, [...], P. Bustamante, and J. Fort. (2021) Seasonal variation of mercury contamination in Arctic seabirds: a pan-Arctic assessment. Science of the Total Environment 750: 142201. (48 authors) Link
13. Clairbaux, M., [...], N.P. Huffeldt, [...], and D. Grémillet. (2021) Meeting Paris agreement objectives will temper seabird winter distribution shifts in the North Atlantic Ocean. Global Change Biology 27: 1457-1469. (50 authors) Link
12. Clairbaux, M., [...], N.P. Huffeldt, [...], and D. Grémillet. (2021) North Atlantic winter cyclones starve seabirds. Current Biology 31: 3964-3971.e3. (49 authors) Link
11. Davies, T.E., A.P.B. Carneiro, [...], N.P. Huffeldt, [...], and M.P. Dias. (2021) Multi-species tracking reveals a major seabird hotspot in the North Atlantic. Conservation Letters 14: e12824. (79 authors) Link. PDF
10. Lameris, T.K., [...], N.P. Huffeldt, [...], and F. van Langevelde. (2021) Migratory vertebrates shift migration timing and distributions in a warming Arctic. Animal Migration 8: 110–131. (58 authors) Link. PDF
9. Huffeldt, N.P. (2020) Photic barriers to poleward range-shifts. Trends in Ecology and Evolution 35: 652-655. Link
8. Huffeldt, N.P. (2020) Performance of horned puffins (Fratercula corniculata) on an object permanence task. Behavioural Processes 181: 104274. Link
7. Huffeldt, N.P., F.R. Merkel, S. Jenni-Eiermann, W. Goymann, and B. Helm. (2020) Melatonin and corticosterone profiles under polar day in a seabird with sexually opposite activity-rhythms. General and Comparative Endocrinology 285: 113296. Link
6. van Beest, F.M., L.T. Beumer, M. Chimienti, J.-P. Desforges, N.P. Huffeldt, S.H. Pedersen, and N.M. Schmidt. (2020) Environmental conditions alter behavioural organization and rhythmicity of a large Arctic ruminant across the annual cycle. Royal Society Open Science 7: 201614. PDF
5. Huffeldt, N.P. and F.R. Merkel. (2016) Sex-specific, inverted rhythms of breeding-site attendance in an Arctic seabird. Biology Letters 12: 20160289. PDF
4. Linnebjerg, J.F., N.P. Huffeldt, K. Falk, F.R. Merkel, A. Mosbech, and M. Frederiksen. (2014) Inferring seabird activity budgets from leg-mounted time-depth recorders. Journal of Ornithology 155: 301-306. Link
3. Huffeldt, N.P. and F.R. Merkel. (2013) Remote time-lapse photography as a monitoring tool for colonial breeding seabirds: a case study using thick-billed murres (Uria lomvia). Waterbirds 36: 330-341. PDF
2. Huffeldt, N.P. and T. Dabelsteen. (2013) Impact of a noise polluted urban environment on the song frequencies of a cosmopolitan songbird, the great tit (Parus major), in Denmark. Ornis Fennica 90: 94-102. PDF
1. Huffeldt, N.P., I.N. Aggerholm, N.H. Brandtberg, J.H. Jørgensen, K. Dichman, and P. Sunde. (2012) Compounding effects on nest-site dispersal of barn owls Tyto alba. Bird Study 59: 174-181. PDF
Scientific Reports
5. Fredsgaard, S.L, K. Raundrup, and K.B. Zinglersen (Eds.) (2025) Baggrundsrapport forud for udnyttelse af vandkraftpotentiale i det centrale Vestgrønland.DCE Scientific Report 664. 135 pp. Danish Centre for Environment and Energy, Aarhus University. PDF
4. Falk, K., S. Møller, and N.P. Huffeldt. (2025) Guidance and background information for long-term monitoring of the Peregrine Falcon in South Greenland. Technical Report no. 137. 27 pp. Pinngortitaleriffik – Greenland Institute of Natural Resources. PDF
3. Zinglersen, K. and K. Raundrup (Eds.) (2025) Baggrundsrapport forud for etablering af nationalpark i Vestgrønland. Technical Report no. 135. 142 pp. Pinngortitaleriffik – Greenland Institute of Natural Resources. PDF
2. Frederiksen, M., K. Falk, N.P. Huffeldt, K. Johansen, A.L. Labansen, J.F. Linnebjerg, F. Merkel, and A. Mosbech. (2014) Seabird baseline studies in Baffin Bay, 2008-2013: colony-based fieldwork at Kippaku and Apparsuit, NW Greenland. DCE Scientific Report nr. 110. 58 pp. Danish Centre for Environment and Energy, Aarhus University. PDF
1. Boertmann, D. and N.P. Huffeldt. (2013) Seabird colonies in the Melville Bay, Northwest Greenland. DCE Scientific Report nr. 45. 34 pp. Danish Centre for Environment and Energy, Aarhus University. PDF
