from cover. Behavior The white-necked thrush mainly feeds on or near the ground on invertebrates (especially insects). It also takes some fruit, berries and seeds. It regularly follows army ant swarms, but does not attend mixed species flocks. Throughout most of its range, especially in the Amazon, it is a shy species, heard far more than seen, but in Trinidad and parts of south-eastern Brazil it may be less retiring. The nest is a lined cup of twigs placed low (at a height of ) in a tree or bush. Two to three reddish-blotched green-blue eggs are laid and incubated by the female alone for 12–13 days. Social monogamous, but extra-pair mate are common. Taxonomy T. albicollis sometimes includes the members of the T. assimilis group as subspecies, in which case the "combined species" is referred to as the white-throated thrush (a name limited to T. assimilis when the two are split). Published evidence supporting either treatment is weak, but most recent authorities have followed the split. On the contrary, it has been suggested that the nominate group and the phaeopygos group of T. albicollis should be considered separate species, but the voices of the two are similar, and the subspecies crotopezus from the nominate group approach members of the phaeopygos group in both plumage and colour of bill. If the two groups are split, the common name rufous-flanked thrush has been suggested for T. albicollis, with T. phaeopygos retaining the common name white-necked thrush or being renamed grey-flanked thrush. Footnotes References Clement, Peter & Hathaway, Ren (2000): Thrushes. Christopher Helm, London. Collar, N. J. (2005). White-throated Thrush (Turdus albicollis). Pp. 663 in: del Hoyo, J.; Elliott, A.; & Christie, D. A. eds. (2005). Handbook of the Birds of the World. Vol. 10. Cuckoo-shrikes to Thrushes. Lynx Edicion, Barcelona. ffrench, Richard; O'Neill, John Patton & Eckelberry, Don R. (1991): A guide to the birds of Trinidad and Tobago (2nd edition). Comstock Publishing, Ithaca, N.Y. Greeney, Harold F.; Gelis, Rudolphe A. & White, Richard (2004): Notes on breeding birds from an Ecuadorian lowland forest. Bulletin of the British Ornithologists' Club 124 (1): 28–37. PDF fulltext Hilty, Steven L. (2003): Birds of Venezuela. Christopher Helm, London. Remsen, J. V., Jr.; Cadena, C. D.; Jaramillo, A.; Nores, M.; Pacheco, J. F.; Robbins, M. B.; Schulenberg, T. S.; Stiles, F. G.; Stotz, D. F.; & Zimmer, K. J. (2008). A classification of the bird