Marshall (1942) Turdus assimilis Laguna de las Ranas: Elsewhere in the area of the lake were steeper slopes & dense underbrush under the forest or at one east-facing hillside the trees were low (25-30') & no undergrowth, only leaves. Still not the same as above habitat. Again this could be a colony, actually was in a sense because many individuals here in a [illegible] limited area, or a restriction to particular very local habitat. Birds almost impossible to see, harsh calls & occasional singing (midday) from high in foliage. Could see only after alighting from flight - generally ran along branches and per stood lengthwise of them thereby keeping generally out-of-sight. Calls and actions remarkably like Tyrens. One I could get singing several times by imitating call and song - but would never come close enuf for shot. Very few seen & 2 shot at extreme range. T. infuscatus here in same trees.