1. Johnson, A. W. (1967). The Birds of Chile and Adjacent Regions of Argentina, Bolivia and Peru. Volume 2. Platt Establecimientos Gráficos, Buenos Aires, Argentina.
2. An Approach to the Study of Molts and Plumages
3. Moult terminology: envisioning an evolutionary approach
4. Jenni, L., and R. Winkler (2020). Moult and Ageing of European Passerines. Second edition. Bloomsbury, London, UK.