Teunissen, N.; Kingma, S. A.; Peters, A.: Nest defence and offspring provisioning in a cooperative bird: Individual subordinates vary in total contribution, but no division of tasks among breeders and subordinates. Behavioral Ecology and Sociobiology 74 (7), 94 (2020)

Tiesmeyer, A.; Ramos, L.; Lucas, J. M.; Steyer, K.; Alves, P. C.; Astaras, C.; Brix, M.; Cragnolini, M.; Domokos, C.; Hegyeli, Z. et al.; Janssen, R.; Kitchener, A. C.; Lambinet, C.; Mestdagh, X.; Migli, D.; Monterroso, P.; Mulder, J. L.; Schockert, V.; Youlatos, D.; Pfenninger, M.; Nowak, C.: Range-wide patterns of human-mediated hybridisation in European wildcats. Conservation Genetics 21 (2), pp. 247 - 260 (2020)

Ungurean, G.; Barrillot, B.; Martinez-Gonzalez, M. D.; Libourel, P.-A.; Rattenborg, N. C.: Comparative perspectives that challenge brain warming as the primary function of REM sleep. iScience 23 (11), 101696 (2020)

Ungurean, G.; van der Meij, J.; Rattenborg, N. C.; Lesku, J. A.: Evolution and plasticity of sleep. Current Opinion in Physiology 15, pp. 111 - 119 (2020)

Valcu, C.-M.; Valcu, M.; Teltscher, K. L.; Kempenaers, B.: Non‐analytical methods for the estimation of total yolk carotenoids in passerine eggs. Ibis 162 (3), pp. 1075 - 1081 (2020)

van der Meij, J.; Rattenborg, N. C.; Beckers, G. J. L.: Divergent neuronal activity patterns in the avian hippocampus and nidopallium. European Journal of Neuroscience: European Neuroscience Association 52 (4), pp. 3124 - 3139 (2020)

van der Meij, J.; Ungurean, G.; Rattenborg, N. C.; Beckers, G. J. L.: Evolution of sleep in relation to memory – A birds’ brain view. Current Opinion in Behavioral Sciences 33, pp. 78 - 85 (2020)

van Hasselt, S. J.; Rusche, M.; Vyssotski, A. L.; Verhulst, S.; Rattenborg, N. C.; Meerlo, P.: The European starling (Sturnus vulgaris) shows signs of NREM sleep homeostasis but has very little REM sleep and no REM sleep homeostasis. Sleep 43 (6), zsz311 (2020)

van Hasselt, S. J.; Rusche, M.; Vyssotski, A. L.; Verhulst, S.; Rattenborg, N. C.; Meerlo, P.: Sleep time in the European starling is strongly affected by night length and moon phase. Current Biology 30 (9), pp. 1664 - 1671.e2 (2020)

Vervoort, R.; Kempenaers, B.: Variation in lek attendance and copulation success of Independent and Satellite male Ruffs Calidris pugnax. Ardea 107 (3), pp. 303 - 320 (2020)

Voelkl, B.; Altman, N. S.; Forsman, A.; Forstmeier, W.; Gurevitch, J.; Jaric, I.; Karp, N. A.; Kas, M. J.; Schielzeth, H.; de Casteele, T. V. et al.; Würbel, H.: Reproducibility of animal research in light of biological variation. Nature Reviews Neuroscience 21, pp. 384 - 393 (2020)

von Bayern, A. M. P.; Jacobs, I.; Osvath, M.: Tool-using puffins prickle the puzzle of cognitive evolution. Proceedings of the National Academy of Sciences of the United States of America 117 (6), pp. 2737 - 2739 (2020)

von Merten, S.; Siemers, B. M.: Shrew twittering call rate is high in novel environments. A lab-study. Mammal Research 65 (3), pp. 469 - 479 (2020)

Wang, D.; Forstmeier, W.; Martin, K.; Wilson, A.; Kempenaers, B.: The role of genetic constraints and social environment in explaining female extra‐pair mating. Evolution: International journal of organic evolution 74 (3), pp. 544 - 558 (2020)

Weisbrod, B.; Wood, S. A.; Steiner, K.; Whyte-Wilding, R.; Puddick, J.; Laroche, O.; Dietrich, D. R.: Is a central sediment sample sufficient? Exploring spatial and temporal microbial diversity in a small lake. Toxins 12 (9), 580 (2020)

Weiser, E. L.; Lanctot, R. B.; Brown, S. C.; Gates, H. R.; Bêty, J.; Boldenow, M. L.; Brook, R. W.; Brown, G. S.; English, W. B.; Flemming, S. A. et al.; Franks, S. E.; Gilchrist, H. G.; Giroux, M.-A.; Johnson, A.; Kendall, S.; Kennedy, L. V.; Koloski, L.; Kwon, E.; Lamarre, J.-F.; Lank, D. B.; Latty, C. J.; Lecomte, N.; Liebezeit, J. R.; McGuire, R. L.; McKinnon, L.; Nol, E.; Payer, D.; Perz, J.; Rausch, J.; Robards, M.; Saalfeld, S. T.; Senner, N. R.; Smith, P. A.; Soloviev, M.; Solovyeva, D.; Ward, D. H.; Woodard, P. F.; Sandercock, B. K.: Annual adult survival drives trends in Arctic-breeding shorebirds but knowledge gaps in other vital rates remain. The Condor 122 (3), duaa026 (2020)

Wetzel, D. P.; Mutzel, A.; Wright, J.; Dingemanse, N. J.: Novel sources of (co)variation in nestling begging behavior and hunger at different biological levels of analysis. Behavioral Ecology 31 (4), pp. 960 - 970 (2020)

Wilson, R. P.; Börger, L.; Holton, M. D.; Scantlebury, D. M.; Gómez-Laich, A.; Quintana, F.; Rosell, F.; Graf, P. M.; Williams, H.; Gunner, R. et al.; Hopkins, L.; Marks, N.; Geraldi, N. R.; Duarte, C. M.; Scott, R.; Strano, M. S.; Robotka, H.; Eizaguirre, C.; Fahlman, A.; Shepard, E. L. C.: Estimates for energy expenditure in free-living animals using acceleration proxies: A reappraisal. Journal of Animal Ecology 89 (1), pp. 161 - 172 (2020)

Wingfield, J. C.; Goymann, W.; Jalabert, C.; Soma, K. K.: Reprint of "Concepts derived from the Challenge Hypothesis". Hormones and Behavior 123, 104802 (2020)

Wüest, R. O.; Zimmermann, N. E.; Zurell, D.; Alexander, J. M.; Fritz, S. A.; Hof, C.; Kreft, H.; Normand, S.; Cabral, J. S.; Szekely, E. et al.; Thuiller, W.; Wikelski, M.; Karger, D. N.: Macroecology in the age of Big Data – Where to go from here? Journal of Biogeography 47 (1), pp. 1 - 12 (2020)