Slate-throated gnatcatcher

Slate-throated gnatcatcher
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Passeriformes
Family:	Polioptilidae
Genus:	Polioptila
Species:	P. schistaceigula
Binomial name
Polioptila schistaceigula Hartert, 1898

The slate-throated gnatcatcher (Polioptila schistaceigula) is a species of bird in the family Polioptilidae. It is found in Colombia, Ecuador, and Panama.[2]

Taxonomy and systematics

The slate-throated gnatcatcher is monotypic. It is apparently sister the Guianan gnatcatcher (Polioptila guaianensis) group and at one time it was suggested that they were conspecific.[3][4]

Description

The slate-throated gnatcatcher is 10 to 11 cm (3.9 to 4.3 in) long and weighs approximately 6 g (0.21 oz). Its crown, the sides of the head, and the upperparts are slate gray, darker on the back. Its cheeks are whitish, its throat and breast sooty, and its belly and flanks white. Its tail is mostly black with some white on the outermost feathers. The sexes are alike.[3]

Distribution and habitat

The slate-throated gnatcatcher is found from central and eastern Panama south through western Colombia into northwestern Ecuador. It inhabits humid primary forest, mature secondary forest, and their borders. In elevation it mostly ranges up to 750 m (2,460 ft).[3]

Behavior

Feeding

The slate-throated gnatcatcher's diet is poorly known, but it is probably small arthropods like those of other Polioptila gnatcatchers. To feed it actively moves through the canopy and sub-canopy, and lower at the forest edges. It follows mixed-species foraging flocks singly or in pairs.[3]

Breeding

No information has been published about the slate-throated gnatcatcher's breeding phenology.[3]

Vocalization

The slate-throated gnatcatcher's most frequent vocalization is "a short, rather faint, ascending trill, 'trrrrrrt'" [1]. It also has a nasal mewing call [2].[3]

References

1. BirdLife International (2018). "Slate-throated Gnatcatcher Polioptila schistaceigula". IUCN Red List of Threatened Species. 2018. Retrieved 29 May 2021.
2. Gill, F.; Donsker, D.; Rasmussen, P. (January 2021). "IOC World Bird List (v 11.1)". Retrieved January 14, 2021.
3. Atwood, J. L. and S. B. Lerman (2020). Slate-throated Gnatcatcher (Polioptila schistaceigula), 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.sltgna1.01 retrieved May 29, 2021
4. Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 23 May 2021. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved May 24, 2021