Margarornis is a genus of passerine birds in the ovenbird family Furnariidae. They are found in South and Middle America. All four species in the genus have "treerunner" in their English name.
Taxonomy The genus Margarornis was introduced in 1853 by the German naturalist Ludwig Reichenbach. The name combines the Ancient Greek margaron meaning "pearl" with ornis meaning "bird". The type species was designated by George Robert Gray in 1855 as Sittasomus perlatus Lesson. This taxon is now considered to be a subspecies of the pearled treerunner (Margarornis squamiger perlatus).
Species The genus contains four species:
Image Scientific name Common name Distribution Margarornis rubiginosus Ruddy treerunner Costa Rica and western Panama. Margarornis stellatusStar-chested treerunner Colombia and Ecuador. Margarornis bellulus Beautiful treerunner Panama Margarornis squamiger Pearled treerunner northern Andes
The white-throated treerunner is placed in the monotypic genus Pygarrhichas.
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