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Updated: Jan 8, 2026

A Method for Investigating Change Blindness in Pigeons Columba Livia

A Method for Investigating Change Blindness in Pigeons Columba Livia

Published on: September 7, 2018

COVID-19規制による都市鳥類の急速な形態変化

Eleanor S Diamant^1,2, Pamela J Yeh^2,3

¹Biology Program, Bard College, Annandale-on-Hudson, NY 12504.

Proceedings of the National Academy of Sciences of the United States of America

|December 15, 2025

Abstract:

The COVID-19 pandemic provided a natural experiment to test the impacts of human activity on urban-dwelling wildlife. Urban dark-eyed juncos differ in bill shape and size in Los Angeles in comparison to local wildlands. We measured juncos that hatched before, during, and after COVID-19 restrictions at a Los Angeles college campus. Birds that hatched during and soon after COVID-19 restrictions had bills that resembled those of local wildland birds. Yet, bills rapidly returned to pre-COVID-19 morphology in birds hatched in the years following pandemic restrictions. Thus, human activity (and lack thereof) underlies rapid morphological change in an urban bird.

キーワード:

COVID-19 人類活動停止ダークアイドジャンコ都市生態学都市進化学

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