Clay-colored Thrush (Turdus grayi subsp. casius) Sexes similar. The only redeeming quality of this picture is that it shows a comparison between a normal Clay-colored Thrush and this leucistic one under the same lighting condition, which was very poor. Canopy Lodge, El Valle de Antn, Cocl Province, Panam. Tropical rainforest/cloud forest becoming a more broadleaf evergreen forest with fewer deciduous trees at ca. 596 m (1,955 ft) elevation adjacent to Ro Guayabo.