KLEEFSTRA R (2020) Andermans Veren. LIMOSA 93 (4): 192-196.

KLEEFSTRA R Paulas routes over Groenland
Kok E.M.A., T.L. Tibbitts, D.C. Douglas, P.W. Howey, A. Dekinga, B. Gnep & T. Piersma 2020. A red knot as a black swan: how a single bird shows navigational abilities during repeat crossings of the Greenland Icecap. Journal of Avian Biology 2020: e02464

KLEEFSTRA R Schotse groenpoten trekken één dag
Summers R., N. Christian, B. Etheridge, S. Rae, I. Cleasby & P. Snæbjörn 2020. Scottishbreeding Greenshanks Tringa nebularia do not migrate far. Bird Study 67: 1-7.

KLEEFSTRA R De VVV van Vlieland: Vliehors, Vliegtuigen & Verstoring
van der Kolk H., K.L. Krijgsveld, H. Linssen, R. Diertens, D. Dolman, M. Jans, M. Frauendorf, B.J. Ens & M. van de Pol 2020. Cumulative energetic costs of military aircraft, recreational and natural disturbance in roosting shorebirds. Animal Conservation 23: 359-372.
van der Kolk H., A.M. Allen, B.J. Ens, K. Oosterbeek, E. Jongejans & M. van de Pol 2020. Spatiotemporal variation in disturbance impacts derived from simultaneous tracking of aircraft and shorebirds. Journal of Applied Ecology published online.

KLEEFSTRA R Kleur mengende Buizerds
Kappers E.F., C. de Vries, A. Alberda, S. Kuhn, M. Valcu, B. Kempenaers & C. Both 2020. Morph-dependent fitness and directional change of morph frequencies over time in a Dutch population of Common buzzards Buteo buteo. Journal of Evolutionary Biology 33: 1306–1315.


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