| the differences in transmission properties of two bird calls show relation to their specific functions. | when vocalizations transmit throughout the environment, attenuation and degradation may change the information of the signal; the loss of information is related to changes in both frequency and duration of vocalizations. the variation in frequency and duration of bird calls is related to the functions of each call type. using a sound transmission experiment, the authors tested the transmission properties of two call types both produced by white-eared ground-sparrows melozone leucotis; these call ... | 2016 | 28040013 |