Engelbrecht, D., and J. Grosel. “Vocalisations and Seasonal Variation in Singing and Aerial Displays of the Short-Clawed Lark Certhilauda Chuana”. Afrotropical Bird Biology:<Br /> Journal of the Natural History of African Birds, vol. 2, Apr. 2022, doi:10.15641/abb.v2i.1098.