| Abstract: | We examined the relationship between acoustic properties of male advertising calls, male body size and female responses in little penguins Eudyptula minor . Larger males produced calls of lower frequency. Playback experiments indicated that females were more likely to respond to low or medium pitched calls, than to high ones (although only 28% of females responded vocally to playback). This may reflect the interest of unmated females in large to medium sized senders as potential mates, or indicate a stronger territorial response to large intruders. |
