Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Cladus: Avemetatarsalia
Cladus: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauriformes
Cladus: Dracohors
Cladus: Dinosauria
Cladus: Saurischia
Cladus: Eusaurischia
Subordo: Theropoda
Cladus: Neotheropoda
Cladus: Averostra
Cladus: Tetanurae
Cladus: Avetheropoda
Cladus: Coelurosauria
Cladus: Tyrannoraptora
Cladus: Maniraptoromorpha
Cladus: Maniraptoriformes
Cladus: Maniraptora
Cladus: Pennaraptora
Cladus: Paraves
Cladus: Eumaniraptora
Cladus: Avialae
Infraclassis: Aves
Cladus: Avebrevicauda
Cladus: Pygostylia
Cladus: Ornithothoraces
Cladus: Ornithuromorpha
Cladus: Carinatae
Parvclassis: Neornithes
Cohors: Neognathae
Cladus: Neoaves
Cladus: Telluraves
Cladus: Australaves
Ordo: Passeriformes
Subordo: Tyranni
Infraordo: Tyrannides
Parvordo: Furnariida
Superfamilia: Furnarioidea
Familia: Furnariidae
Genus: Margarornis
Species: Margarornis stellatus
Name
Margarornis stellatus P.L. Sclater & Salvin, 1873
Synonyms
Margarornis stellata (protonym)
References
Primary references
Sclater, P.L. & Salvin, O. 1873. Nomenclator avium neotropicalium: sive avium quae in regione neotropica hucusque repertae sunt nomina systematice disposita adjecta sua cuique speciei patria accedunt generum et specierum novarum diagnoses. Londini [London]: Sumptibus Auctorum. J.W. Elliot. viii + 163pp. First citation p.67 BHL DOI: 10.5962/bhl.title.61132 Reference page. Original description p.160 BHL
Links
IUCN: Margarornis stellatus (Near Threatened)
Vernacular names
English: Fulvous-dotted treerunner
español: Subepalo estrellado
The star-chested treerunner or fulvous-dotted treerunner[2] (Margarornis stellatus) is a Near Threatened species of bird in the family Furnariidae. It is found in Colombia and Ecuador.[3][1]
Taxononomy and systematics
The star-chested treerunner is monotypic.[3]
Description
The star-chested treerunner is 13 to 15 cm (5.1 to 5.9 in) long and weighs 21 to 22 g (0.74 to 0.78 oz). The sexes have the same plumage. Adults have a wide but indistinct dull rufescent brownish supercilium, dull reddish brown ear coverts, and a more rufescent moustacial area. Their crown is dark reddish brown and their upperparts slightly paler. Their wing coverts are reddish brown, their primary coverts dark fuscous, and their flight feathers dark fuscous with dark rufescent edges. Their tail is dark reddish brown; the ends of the tail feathers lack barbs, giving a spiny appearance. Their throat is whitish. Their breast has a rufous-brown background; its upper part has a few rows of wide whitish spots with black surrounds and below them are several rows of smaller, more elongated black-edged white spots. The spots disappear by the lower breast. Their belly, flanks, and undertail coverts are plain rufous-brown. Their iris is dark brown, their maxilla horn to whitish horn with a browner base, their mandible horn, and their legs and feet grayish to brownish.[4][5][6]
Distribution and habitat
The star-chested treerunner is found in Colombia's Western and Central Andes from Chocó and Antioquia departments and south into western Ecuador as far as Pichincha Province. There is also a single record further south in Chimborazo Province. It inhabits montane evergreen forest, where it favors areas heavy with moss and epiphytes. In elevation it ranges from 1,200 to 1,900 m (3,900 to 6,200 ft) in Ecuador and from 1,200 to 2,200 m (3,900 to 7,200 ft) in Colombia.[4][5][6]
Behavior
Movement
The star-chested treerunner is a year-round resident throughout its range.[4]
Feeding
The star-chested treerunner feeds on a variety of arthropods. It typically forages singly or in pairs, usually in mixed-species feeding flocks, and from the forest's mid-storey to its canopy. It acrobatically hitches up trunks and along limbs using its tail for support, and gleans prey from bark, moss, and epiphytes, often while hanging upside down.[4][5][6]
Breeding
The star-chested treerunner's breeding season spans at least February to April, but nothing else is known about its breeding biology.[4]
Dickcissel male perched on a metal pole singing, with neck stretched and beak open.
Songs and calls
Listen to star-chested treerunner on xeno-canto
Vocalization
Though both xeno-canto and the Cornell Lab of Ornithology's Macaulay Library have several recordings of star-chested treerunner vocalizations, the species' song has not been described in words.[4][5]
Status
The IUCN has assessed the star-chested treerunner as Near Threatened. It has a restricted range (both in latitude and elevation) and an unknown population size that is believed to be decreasing. "It is primarily threatened by rapid and ongoing deforestation in the Chocó region, largely owing to intensive logging, human settlement, cattle grazing, mining and coca and oil palm cultivation, with destruction particularly severe within its elevational range."[1] It is considered locally common in Colombia[6] and very rare and local in Ecuador[5]. It does occur in one protected area in Colombia.[4]
References
BirdLife International (2016). "Fulvous-dotted Treerunner Margarornis stellatus". IUCN Red List of Threatened Species. 2016: e.T22702722A93887553. doi:10.2305/IUCN.UK.2016-3.RLTS.T22702722A93887553.en. Retrieved 10 September 2023.
Clements, J. F., T. S. Schulenberg, M. J. Iliff, T. A. Fredericks, J. A. Gerbracht, D. Lepage, S. M. Billerman, B. L. Sullivan, and C. L. Wood. 2022. The eBird/Clements checklist of birds of the world: v2022. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/ retrieved November 10, 2022
Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (July 2023). "Ovenbirds, woodcreepers". IOC World Bird List. v 13.2. Retrieved July 31, 2023.
Remsen, Jr., J. V. (2020). Fulvous-dotted Treerunner (Margarornis stellatus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.fudtre1.01 retrieved September 10, 2023
Ridgely, Robert S.; Greenfield, Paul J. (2001). The Birds of Ecuador: Field Guide. Vol. II. Ithaca: Cornell University Press. pp. 361–362. ISBN 978-0-8014-8721-7.
McMullan, Miles; Donegan, Thomas M.; Quevedo, Alonso (2010). Field Guide to the Birds of Colombia. Bogotá: Fundación ProAves. p. 120. ISBN 978-0-9827615-0-2.
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