Correlation of beak morphology and song features in Dusky Warbler (Phylloscopus fuscatus)
To study the relationship between beak morphology and sound frequency,from 5 July to 10 August 2015,we recorded 33 dusky warbler (Phylloscopus fuscatus) songs between 5:00 a.m.and 10:00 a.m.in fine days (no wind,no rain) in the breeding season.The beak morphology parameters and the sound characteristics were measured.The results showed that:there was no relationship between high frequency,low frequency,max frequency and bandwidth of songs and culmen or beak gape;culmen was found to correlate negatively with low frequency of trill,however,there was no correlation between the culmenand high frequency,the max frequency or the bandwidth;beak gape was not significantly related to the trill traits.The results of this study demonstrate that culmen can provide information about the low frequency of trill,and vocal tract can affect the characteristics of sound.
NETL
NSTL
万方数据
维普
