Ens, B. J., Meer, J. v. d., Oosterbeek, K., Rutten, A. L., & Verhulst, S. Experimental evidence for interference competition in oystercatchers, Haematopus ostralegus. I. Captive birds.

Ens, Bruno J., Jaap van der Meer, Kees Oosterbeek, Anne L. Rutten, و Simon Verhulst. Experimental Evidence for Interference Competition in Oystercatchers, Haematopus Ostralegus. I. Captive Birds.

Ens, Bruno J., et al. Experimental Evidence for Interference Competition in Oystercatchers, Haematopus Ostralegus. I. Captive Birds.