TULP I & KLEEFSTRA R (2017) Andermans Veren. LIMOSA 90 (4): 175-177.

TULP I Eilandsnippen versus continentale snippen
Rodrigues T.M., P. Andrade, M. Rodrigues & D. Gonçalves 2018. Mixed patterns of morphological adaptation to insularity in an aerial displaying bird, the Common Snipe Gallinago gallinago. Ibis: doi: 10.1111/ ibi.12578.

TULP I Klimaatverandering en de lengte van het broedseizoen
Halupka L. & K. Halupka 2017. The effect of climate change on the duration of avian breeding seasons: a meta-analysis. Proceedings of the Royal Society B Biological Sciences 284: 1867.

TULP I Klimaatverandering verlengt trekroutes
Howard C., P.A. Stephens, J.A. Tobias, C. Sheard, S.H.M. Butchart & S.G. Willis 2018. Flight range, fuel load and the impact of climate change on the journeys of migrant birds. Proceedings of the Royal Society B Biological Sciences 285: 1873.

KLEEFSTRA R Doordachte Raven-ruilhandel
Kabadayi C. & M. Osvath 2017. Ravens parallel great apes in flexible planning for tooluse and bartering. Science 357: 202-204.

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