الوصول الحر: https://doaj.org/article/dd804000655e487eb3096d04b7f5f1d6Test
الوصول الحر: https://doaj.org/article/b934333624f944a291912ea78cc0a672Test
الوصول الحر: https://www.raco.cat/index.php/Mzoologica/article/view/90366Test
الإتاحة: https://doi.org/10.1093/ornithapp/duac046Testhttp://hdl.handle.net/21.11116/0000-000D-3CAC-FTest
الإتاحة: https://doi.org/10.1111/acv.12107Test
الإتاحة: https://espace.library.uq.edu.au/view/UQ:f3b1f25Test