C. Onsal

Terminal flourishes but not trills differ between urban and rural chaffinch song

The paper compares song and rain call characteristics between urban and rural chaffinches, finding urban songs have lower minimum frequencies and broader bandwidth in terminal flourishes.

Aggression and multimodal signaling in noise in a common urban songbird

This study examines how urban noise affects aggression and signaling in European robins, finding urban birds are more aggressive but do not shift to visual signals in noisy conditions.