| Titre : | Drastic decline in the endemic brown shrike subspecies Lanius cristatus superciliosus in Japan (2022) |
| Auteurs : | Munehiro Kitazawa, Auteur ; Masayuki Senzaki, Auteur ; Hiroaki Matsumiya, Auteur ; Seiichi Hara, Auteur ; Haruka Mizumura, Auteur |
| Type de document : | Article |
| Dans : | Bird Conservation International (32(1) March, 2022) |
| Article en page(s) : | 78-86 |
| Langues: | Anglais |
| Mots-clés: | Breeding range ; East Asian-Australasian Flyway ; Japanese brown shrike ; Long-distance migrant ; Population size |
| Résumé : | The Brown Shrike Lanius cristatus breeds across a large portion of eastern Asia. One subspecies, L. c. superciliosus, is primarily endemic to Japan and was historically abundant throughout its breeding range. However, both local- and broad-scale studies documented a drastic population decline between the 1970s and 1990s, and the status of the taxon is currently unavailable in Japan. We conducted a nationwide survey to estimate the current population size and breeding range of this subspecies within Japan. We further compared our findings to the historical breeding ranges through a literature review. The total population size was estimated at 149 breeding pairs, and the current breeding range was estimated at 6,800 km2, indicating a 90.9% range contraction over the past century. Our study highlights the urgency of protecting remaining breeding habitats and establishing effective conservation strategies for L. c. superciliosus. |
| En ligne : | https://www.cambridge.org/core/journals/bird-conservation-international/article/drastic-decline-in-the-endemic-brown-shrike-subspecies-lanius-cristatus-superciliosus-in-japan/DE7D1BAE6F51C029EC1553681159C736 |



