Geographic Patterns in Chiffchaff Vocalizations: A Multi-Subspecies Analysis Across Hybrid Zones. International journal of zoological sciences, [S. l.], v. 5, n. 03, p. 8–19, 2025. Disponível em: https://www.academicpublishers.org/journals/index.php/ijzs/article/view/5971.. Acesso em: 10 dec. 2025.