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hbw.com
Van Gils, J., Wiersma, P., Kirwan, G.M. & Sharpe, C.J. (2019). Eurasian Curlew (Numenius arquata). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/53897 on 17 November 2019).