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/lp/cambridge-university-press/drastic-decline-in-the-endemic-brown-shrike-subspecies-lanius-hDmPjlDiYL
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- Publisher
- Cambridge University Press
- Copyright
- © The Author(s), 2020. Published by Cambridge University Press on behalf of BirdLife International
- ISSN
- 0959-2709
- eISSN
- 1474-0001
- DOI
- 10.1017/S0959270920000556
- Publisher site
- See Article on Publisher Site
Abstract
Summary 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.
Journal
Bird Conservation International – Cambridge University Press
Published: Mar 1, 2022
Keywords: Breeding range; East Asian-Australasian Flyway; Japanese brown shrike; Long-distance migrant; Population size