At what hour do Pied Flycatchers Ficedula hypoleuca lay their eggs?
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Rosengren, V. (1993). At what hour do Pied Flycatchers Ficedula hypoleuca lay their eggs?. Ornis Fennica, 70(1), 47–48. Hämtad från https://ornisfennica.journal.fi/article/view/133364
