Eyes of love phenomenon in Java sparrows (IMAGE)

Hokkaido University

Eyes of love phenomenon in Java sparrows

Caption

Eyes of love — eye rings of Java sparrows swell after forming a bond with their mate. Males (top row) show larger swellings than females (bottom row). (Jenna Onaga, Masayo Soma. PLOS ONE. October 25, 2023)
 

Credit

Jenna Onaga, Masayo Soma. PLOS ONE. October 25, 2023

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