To assess the Rustic Bunting’s global conservation status we compiled, for the first time, population data across its breeding and wintering ranges. The analysis reveals a 75–87% decline in overall population size over the last 30 years and a 32–91% decline over the last 10 years. The trend estimates indicate that the long-term (30-year) range-wide population decline in the Rustic Bunting (Emberiza rustica) is of similar magnitude to two well-known examples of declining species within the same genus, the Yellow-breasted Bunting Emberiza aureola and the Ortolan Bunting E. hortulana.
Source: Edenius L et al. Bird Conservation International Volume 27, Issue 1 March 2017, pp. 35-44
https://www.cambridge.org/core/journals/bird-conservation-international…
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