Toivari L, Lindqvist O. Daily singing rhythmics of the marsh warbler (Acrocephalus palustris) and Blyth´s reed warbler (Acrocephalus dumetorum). Ornis Fenn [Internet]. 1962Dec.31 [cited 2025Apr.20];39(4):151–154. Available from: https://ornisfennica.journal.fi/article/view/132678