García, Javier, Arild Johnsen, Benito Fuertes, and Susana Suárez-Seoane. “Evolutionary Divergences in Luscinia Svecica Subspecies Complex – New Evidence Supporting the Uniqueness of the Iberian Bluethroat Breeding Populations”. Ornis Fennica 94, no. 3 (September 30, 2017): 141–149. Accessed April 27, 2025. https://ornisfennica.journal.fi/article/view/133919.