C. Akcay

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.

Song sparrows do not discriminate between their own song and stranger song

This study finds song sparrows do not distinguish between their own song and stranger songs, challenging previous claims of auditory self-recognition in birds.

Great tits in noisy territories and avoiding overlapping respond stronger to territorial intruders.

The paper examines whether song overlapping in great tits correlates with aggressive behaviors during territorial intrusions and finds no support for song overlapping as a signal of aggression.

Territory establishment, song learning strategies and survival in song sparrows

This study examines how timing of territory establishment relates to song learning and survival in song sparrows, finding no systematic effect on song repertoire or survival.

Bird Song Learning is Mutually Beneficial for Tutee and Tutor

The study shows that bird song learning benefits both tutors and tutees, as tutees who learn more songs from tutors survive longer, and tutors also live longer.

Male song sparrows modulate their aggressive signaling in response to plumage signals: experiments with 3-D printed models

The paper tests how male song sparrows respond to 3-D printed models with different chest spotting patterns, finding that less spotted models elicit more aggressive signaling.

Multi-modal communication: Song sparrows increase signal redundancy in noise

This study investigates how song sparrows adjust their multimodal communication in response to noise, finding increased signal redundancy rather than a shift to visual signals.

Are signals of aggressive intent less honest in urban habitats?

This study examines if aggressive signaling honesty changes in urban song sparrows, finding that urban birds maintain signal honesty despite higher noise levels.

Male parental investment reflects the level of partner contributions and brood value in tree swallows

The paper shows that male parental effort in tree swallows matches female effort increases only in populations with lower sexual conflict, suggesting partner signals coordinate care when brood value is uncertain.

Good tutors are not Dear Enemies in Song Sparrows

The study investigates how song sparrows choose tutors for song learning, finding that aggression toward tutors correlates with learning success.