Lefranc, Norbert. “A Brief Look on the Taxonomy Changes in Shrikes since 1960 With Focus on the Excubitor Meridionalis Borealis Group”. European Journal of Ecology 10 (December 20, 2024): 10–13. Accessed March 29, 2025. https://journals.ku.edu/EuroJEcol/article/view/23239.