Oschadleus, H., Underhill, L. and Scott, T. 2026. Primary moult of four species of larks: preliminary results for Large-billed Lark, Spike-heeled Lark, Grey-backed Sparrow-lark and Red-capped Lark. Biodiversity Observations. 16, 1 (Apr. 2026), 41–47. DOI:https://doi.org/10.15641/bo.2033.