“…Some studies have reported that male Curlew Sandpipers start to moult before females, 26,37,38 although others failed to find any difference. 39,40 More males starting primary moult in our study area could have increased the estimated stopover length of this sex. However, the number of birds that started wing moult in the study area was small (6.2% of the adult birds ringed in autumns 1992 and 1993), and although more males started to moult in the study area in 1993, no difference in the number of males and females moulting in the area was detected in 1992.…”