Rusty-margined Flycatcher

The rusty-margined flycatcher (''Myiozetetes cayanensis'') is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Panama and every mainland South American country except Chile and Uruguay, though only as a vagrant to Argentina.Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, G. Del-Rio, A. Jaramillo, D. F. Lane, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 30 March 2025. Species Lists of Birds for South American Countries and Territories. https://www.museum.lsu.edu/~Remsen/SACCCountryLists.htm retrieved 30 March 2025 It has also been recorded as a vagrant in Costa Rica.Sandoval, L., Sánchez, C., Biamonte, E., Zook, J.R., Sánchez, J.E., Martínez, D., Loth, D. and O’Donahoe, J. (2010). Recent records of new and rare bird species in Costa Rica. Bull. Brit. Orn. Club 130(4): 237–245.

Taxonomy

In 1760 the French zoologist Mathurin Jacques Brisson included a description of the rusty-margined flycatcher in his ''Ornithologie'' based on a specimen collected in Cayenne in French Guiana. He used the French name ''Le gobe-mouche de Cayenne'' and the Latin ''Muscicapa Cayanensis''. The two stars (**) at the start of the section indicates that Brisson based his description on the examination of a specimen. Although Brisson coined Latin names, these do not conform to the binomial system and are not recognized by the International Commission on Zoological Nomenclature. When in 1766 the Swedish naturalist Carl Linnaeus updated his ''Systema Naturae'' for the twelfth edition, he added the rusty-margined flycatcher among the 240 species that had been previously described by Brisson. Linnaeus included a brief description, used Brisson's Latin name as the binomial name ''Muscicapa cayanensis'', and cited Brisson's work. This species is now placed in the genus ''Myiozetetes'' that was erected by the English zoologist Philip Sclater in 1859.

The rusty-margined flycatcher has these four subspecies:

*''M. c. rufipennis'' Lawrence, 1869
*''M. c. hellmayri'' Hartert, EJO & Goodson, 1917
*''M. c. cayanensis'' (Linnaeus, 1766)
*''M. c. erythropterus'' ( Lafresnaye, 1853)

Description

The rusty-margined flycatcher is long and weighs . The sexes have the same plumage, though females average slightly smaller than males. Adults of the nominate subspecies ''M. c. cayanensis'' have a dark sooty brown to blackish brown crown with a mostly hidden bright yellow to golden-orange patch in the center. The have a white supercilium that begins on the forehead and extends far past the eye; the rest of their face is dark sooty brown to blackish brown. Their upperparts are plain brown to olive-brown. Their wings are deep grayish brown with dull olive edges on the inner secondaries, thin rusty or cinnamon-rufous edges on the outer secondaries and inner primaries, and thin rufous margins on the rest of the primaries. Their tail is dusky brownish with light olive edges on the feathers. Their chin and throat are white and their underparts are bright yellow. Juveniles are similar to adults but with no yellow on the crown and more rusty-cinnamon edges on the wing and tail feathers.Mobley, J. A. and G. M. Kirwan (2020). Rusty-margined Flycatcher (''Myiozetetes cayanensis''), 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.rumfly1.01 retrieved June 20, 2025

The other subspecies of the rusty-margined flycatcher differ from the nominate and each other thus:

*''M. c. rufipennis'': wider and bolder rufous on the wings and tail than nominate
*''M. c. hellmayri'': paler with more olivaceous upperparts and less rufous on the primaries than nominate
*''M. c. erythropterus'': largest subspecies, with more prominent rufous on the wings

All subspecies have a brown iris, a stubby black bill, and black legs and feet.

Distribution and habitat

The subspecies of the rusty-margined flycatcher are found thus:

*''M. c. rufipennis'': Venezuela north of the Orinoco River and south through eastern Colombia and most of eastern Ecuador
*''M. c. hellmayri'': Pacific slope of Panama in Chiriquí and Veraguas provinces; from the Panama Canal Zone into western Colombia and south through western Ecuador and into northern Colombia, and east into western Venezuela's Maracaibo Basin, Zulia, and the western slope of the Andes from Táchira to Lara
*''M. c. cayanensis'': from southern Venezuela east across the Guianas and northern Brazil and south though Brazil (except the western Amazon Basin) to Mato Grosso do Sul, southeastern Peru's Madre de Dios Department, northern Bolivia, and extreme eastern Paraguay
*''M. c. erythropterus'': Rio de Janeiro and southern and eastern Minas Gerais states in southeastern Brazil

In addition there are at least three records of ''M. c. hellmayri'' in far southern Costa Rica and it has nested there.Sandoval, L., Sánchez, C., Biamonte, E., Zook, J.R., Sánchez, J.E., Martínez, D., Loth, D. and O’Donahoe, J. (2010). "Recent records of new and rare bird species in Costa Rica". ''Bull. Brit. Orn. Club'' 130(4): 237–245. The species has also occurred as a vagrant in Argentina.

The rusty-margined flycatcher inhabits a variety of partially open landscapes. These include cultivated areas, clearings and pastures with shrubs, gallery forest, and the edges of more extensive forest. In the Amazon Basin it also occurs along rivers and oxbow lakes. In some areas it occurs in ranches, parks, and gardens but tends to stay away from human habitations there. In all locations if favors areas near water. In elevation it ranges from sea level to in Colombia, to in Ecuador, north of the Orinoco River and south of it in Venezuela, and to and locally higher in Brazil.

Behavior

Movement

The rusty margined flycatcher appears to be a year-round resident in most of its range. However, its status as a resident or migrant in Venezuela south of the Orinoco River is uncertain as its numbers fluctuate there.

Feeding

The rusty-margined flycatcher feeds mostly on insects and also includes small fruits in its diet. It usually forages in pairs and sometimes in small groups. It usually perches in the open and takes much prey with sallies to the ground or vegetation and in mid-air by hawking; often the sallies are over water. It usually takes fruit by gleaning or snatching while briefly hovering.

Breeding

The rusty-margined flycatcher's breeding season has not been fully defined. It includes March and April in Panama, March to August in Venezuela, and multiple months throughout the year in Colombia. Its nest is a bulky dome with a side entrance made from twigs and dry grass. It typically is placed fairly conspicuously in a branch crotch between about above the ground. The clutch is two or three eggs that are white with a rosy yellow tinge and chestnut-brown markings. The incubation period and details of parental care are not known. At one study site in Panama fledging occurred 17 to 21 days after hatch.

Vocalization

The rusty-margined flycatcher's dawn song is "a repeated ''fwee'', sometimes with short couplet or additional note added". Its most common call is "a thin, whining, almost plaintive ''peeeeeeeea'' or ''wheeeeee''" that may be repeated several times. Other calls include a "loud and emphatic ''uuuuureeeéét-éét-éét'' or ''too-eeéet''" and a "quick rolling series of ''keé-wit'' ''tis-u'' or ''chew-chewit''" notes. The series is often repeated several times and is sometimes made by a pair in duet.

Status

The IUCN has assessed the rusty-margined flycatcher as being of Least Concern. It has an extremely large range and its estimated population of at least fifty million mature individuals is believed to be stable. No immediate threats have been identified. It is considered very common in Colombia, fairly common in Ecuador, locally fairly common in Peru, common north of the Orinoco and less numerous south of it in Venezuela, and common in Brazil. It is " lerant of converted habitats, and occurs in many national parks and other protected areas throughout its large range".

References

Further reading

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External links

Rusty-margined flycatcher photo gallery
VIREO

{{Taxonbar, from=Q1271552

rusty-margined flycatcher
Birds of the Amazon rainforest
Birds of Bolivia
Birds of Brazil
Birds of the Cerrado
Birds of Colombia
Birds of Venezuela
Birds of the Guiana Shield
Birds of Panama
Birds of Tumbes-Chocó-Magdalena
rusty-margined flycatcher
rusty-margined flycatcher
Taxonomy articles created by Polbot