Timing of the onset of postnuptial moult in the Willow Warbler Phylloscopus trochilus in relation to breeding in southern Finland

Tiainen, J. (1981). Timing of the onset of postnuptial moult in the Willow Warbler Phylloscopus trochilus in relation to breeding in southern Finland. Ornis Fennica, 58(2), 56–63. https://ornisfennica.journal.fi/article/view/133062