Transmitted Off Circular Polarized Light Illumination
KINGDOM: Animalia PHYLUM: Chordata CLASS: Aves ORDER: Passeriformes FAMILILY: Turdidae GENUS: Ixoreus SPECIES: naevius
The Varied Thrush (Ixoreus naevius) is one of the "Songbirds". Its distinctive orange plumage on its neck, breast, wing bars, and back and the black
bar around its neck make it easy to distinguish from its cousin the Robin (Turdus migratorius). The range of the Varied Thrush tends to be in
the dense conifer forest of western North America from California to Alaska.
Significance in the Environment:
The base cell of the barbule of the Varied Thrush contains knobbed villi, characteristic of many songbirds. Villi are often seen on the base
cell of barbules from hummingbirds, songbirds, some shorebirds, and woodpeckers. Pigment is concentrated in the nodes but generally extends
down the barbule from the node and may extend the full distance between nodes. The expanded nodes are triangular to spined and begin near
the base of the barbule. The distal nodes tend to be more triangular.
Dove, Carla J. and Sandra L. Koch, "Microscopy of feathers: a practical guide for forensic feather identification", THE MICROSCOPE, vol. 59,
no. 2, pp. 51-71, 2011
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