Does begging call convergence increase feeding rates to nestling tree swallows Tachycineta bicolor?

Marty L. Leonard, Andrew G. Horn, Alexandra Dorland

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Some studies suggest that offspring might coordinate their begging displays to send a more effective brood signal, which in turn, could increase parental feeding rates. In tree swallows Tachycineta bicolor, when nestlings call together, their calls are more similar in structure than when they call alone. Here, we tested the hypothesis that call convergence enhances the overall brood signal, thus increasing parental provisioning rates. We played back similar and dissimilar calls (as measured by cross-correlation) to parents during a one-h playback period, and filmed the response of parents and nestlings. Contrary to our hypothesis, parental feeding rates did not differ in relation to call similarity. Based on these results, call similarity does not appear to function as a coordinated brood signal in tree swallows.

Original languageEnglish
Pages (from-to)243-247
Number of pages5
JournalJournal of Avian Biology
Volume40
Issue number3
DOIs
Publication statusPublished - May 2009

ASJC Scopus Subject Areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

Fingerprint

Dive into the research topics of 'Does begging call convergence increase feeding rates to nestling tree swallows Tachycineta bicolor?'. Together they form a unique fingerprint.

Cite this