457. Notes on the vocalizations of Kungwe Apalis Apalis argentea

In the following text, I briefly analyze and compare the voice of Kungwe Apalis Apalis argentea with the closely related Buff-throated Apalis Apalis rufogularis. I also try to quantify the extent of any vocal differences using the criteria proposed by Tobias et al. (2010) as a basis for taxonomic review. I have made use of sound recordings available online at Xenocanto (XC) and the Macaulay Library (ML), and several unpublished recordings.