Boat-billed tody-tyrant

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Boat-billed tody-tyrant
Hemitriccus josephinae Boat-billed Tody-tyrant; Manaus, Amazonas, Brazil (cropped).jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Tyrannidae
Genus: Hemitriccus
Species:
H. josephinae
Binomial name
Hemitriccus josephinae
(Chubb, 1914)
Hemitriccus josephinae map.svg

The boat-billed tody-tyrant (Hemitriccus josephinae) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Brazil, French Guiana, Guyana, and Suriname. [2]

Contents

Taxonomy and systematics

The boat-billed tody-tyrant was originally described as Euscarthmus josephinae. The species' specific epithet honors the daughter of F. V. McConnell, whose collection held the type specimen. [3] The species for a time was placed alone in genus Microcochlearius which was later merged into Hemitriccus. [4]

The boat-billed tody-tyrant is monotypic. [2]

Description

The boat-billed tody-tyrant is about 11 cm (4.3 in) long and weighs 10.2 to 10.5 g (0.36 to 0.37 oz). The sexes have the same plumage. Adults have a dull olive crown and nape. They have pale gray lores and ear coverts on an otherwise olive face. Their back and rump are dull olive. Their wings are plain olive and their tail dusky brownish olive. Their throat is dingy grayish white, their breast and belly pale yellow, and their crissum buffy. They have a reddish brown iris and light gray legs and feet. Their bill has a wide base; it is gray with a pale base to the mandible. [3] [5] [6]

Distribution and habitat

The boat-billed tody-tyrant is found across most of the area of the Guianas, south into Brazil to the area of Manaus, and east in that country to the Atlantic in Amapá. There is speculation that it also occurs in eastern Venezuela but the South American Classification Committee of the American Ornithological Society has no records there. [5] [6] [7] [8] The species inhabits humid evergreen forest where it favors the forest edge, vine tangles, and gaps such as those caused by fallen trees. [5] [6] [7]

Behavior

Movement

The boat-billed tody-tyrant is a year-round resident. [5]

Feeding

The boat-billed tody-tyrant feeds on insects. It typically forages singly or in pairs and sometimes joins mixed-species feeding flocks. It feeds mostly in dense vegetation in the forest's middle story about 6 to 9 m (20 to 30 ft) above the ground, using short upward sallies from a perch to glean prey from vegetation and branches. [5] [7]

Breeding

Nothing is known about the boat-billed tody-tyrant's breeding biology. [5]

Vocalization

What could be either the song or call of the boat-billed tody-tyrant is a "high, falling, slightly nasal 'pic-pic---' ". [6] It also makes pic notes singly, a rising and falling series of about five pic notes, and "a rapid swelling and then descending series of 7-15 quick pic notes". [7]

Status

The IUCN has assessed the boat-billed tody-tyrant as being of Least Concern. It has a large range; its population size is not known and is believed to be decreasing. No immediate threats have been identified. [1] It is considered generally rare and occurs in a few protected areas. [5]

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References

  1. 1 2 BirdLife International (2016). "Boat-billed Tody-tyrant Hemitriccus josephinae". IUCN Red List of Threatened Species . 2016: e.T22698863A93707153. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22698863A93707153.en . Retrieved 21 January 2025.
  2. 1 2 Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (August 2024). "Tyrant flycatchers". IOC World Bird List. v 14.2. Retrieved 19 August 2024.
  3. 1 2 Ogilvie-Grant, W. R., ed. (1914). Bulletin of the British Ornithologists’ Club. Vol. XXXiii. British Ornithologists’ Club. p. 132. Retrieved January 21, 2025.
  4. 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 18 November 2024. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved November 26, 2024
  5. 1 2 3 4 5 6 7 Clock, B. M. (2020). Boat-billed Tody-Tyrant (Hemitriccus josephinae), 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.bbttyr1.01 retrieved January 21, 2025
  6. 1 2 3 4 van Perlo, Ber (2009). A Field Guide to the Birds of Brazil. New York: Oxford University Press. pp. 304–305. ISBN   978-0-19-530155-7.
  7. 1 2 3 4 Johnson, E.I., Vargas, C.F., Costa, T.V.V. and Andretti, C.B. (2010). A range extension and ecology of Boat-billed Tody-Tyrant Hemitriccus josephinae in central Amazonian Brazil. Bull. Brit. Orn. Club. 130(4): 266–272 retrieved January 21, 2025
  8. 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 18 November 2024. Species Lists of Birds for South American Countries and Territories. https://www.museum.lsu.edu/~Remsen/SACCCountryLists.htm retrieved November 26, 2024