James Denis Summers-Smith, a professional tribologist who made significant contributions to ornithology as a highly skilled amateur, died May 5, 2020. His pioneering studies of the lowly House Sparrow and other species in the genus Passer resulted in numerous articles in peer-reviewed ornithological journals as well as four influential books on sparrows, and a fifth book chronicling his life pursuing sparrows throughout the world. He also played a central role in the establishment of the Working Group on Granivorous Birds, a part of the 5-year International Biological Program (IBP) that resulted in intensive international studies of sparrows, pigeons, and other avian granivores.

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詹姆斯·丹尼斯·萨默斯-史密斯，1920–2020 年

詹姆斯·丹尼斯·萨默斯-史密斯 (James Denis Summers-Smith) 是一位专业摩擦学家，他作为一名技艺精湛的业余爱好者对鸟类学做出了重大贡献，于 2020 年 5 月 5 日去世。鸟类学期刊以及四本关于麻雀的有影响力的书，还有第五本书记录了他在世界各地追捕麻雀的生活。他还在食肉鸟类工作组的建立中发挥了核心作用，该工作组是为期 5 年的国际生物计划 (IBP) 的一部分，该计划导致对麻雀、鸽子和其他食肉鸟类进行深入的国际研究。