Citation: H. Hotker et M. Frederiksen, Estimation of total numbers of Pied Avocets Recurvirostra avosetta using amoulting site in the Danish Wadden Sea, ARDEA-T NED, 89(3), 2001, pp. 537-541
Citation: H. Hotker, Intraspecific variation in size and density of Avocet colonies: effects ofnest-distances on hatching and breeding success, J AVIAN BIO, 31(3), 2000, pp. 387-398
Citation: H. Hotker et A. Sebebade, Effects of predation and weather on the breeding success of Avocets Recurvirostra avosetta, BIRD STUDY, 47, 2000, pp. 91-101