Ceara woodcreeper

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Ceara woodcreeper
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Furnariidae
Genus: Xiphorhynchus
Species:
X. atlanticus
Binomial name
Xiphorhynchus atlanticus
(Cory, 1916)

The Ceara woodcreeper or Atlantic woodcreeper (Xiphorhynchus atlanticus) is a Vulnerable species of bird in the subfamily Dendrocolaptinae of the ovenbird family Furnariidae. It is endemic to Brazil.[2][1]

Taxonomy and systematics

The Ceara woodcreeper was originally placed in genus Lepidocolaptes but has been in its current assignment since the late 1990s. Until the 2010s it was considered a subspecies of the lesser woodcreeper (X. fuscus).[3][4]

The Ceara woodcreeper is monotypic.[2]

Description

The Ceara woodcreeper is a small, slim member of its genus, with a disproportionatly large head and a longish, slim, slightly decurved bill. The species is 15 to 18.5 cm (5.9 to 7.3 in) long. The sexes have the same plumage. Adults have a mostly dusky face with a thin creamy to yellowish buff supercilium and often a pale eyering. Their crown and nape are blackish brown with small yellowish buff to cinnamon spots on the crown. The spots become streaks on the nape and sides of the neck and weakly continue onto the upper back. Their back and wing coverts are olive-brown to reddish brown. Their flight feathers, rump, and tail are rufous-chestnut with darker outer webs and tips on the flight feathers. Their throat is creamy yellow with a faint darker pattern. Their breast and belly are ochracous brown with a subdued scaly appearance from blurry dark-edged buff spots. Their undertail and underwing coverts are cinnamon. Their iris is dark brown, their maxilla blackish brown to dark horn (often with a darker base), their mandible pinkish to white (sometimes with a darker tip), and their legs and feet olive-gray to bluish gray.[4]

Distribution and habitat

The Ceara woodcreeper is found only in northeastern Brazil, from Ceara south into Alagoas north of the Rio São Francisco. It inhabits humid forest, both primary and secondary and also relict patches of brejos de altitude in the Caatinga. In elevation it reaches 600 m (2,000 ft).[4]

Behavior

Movement

The Ceara woodcreeper is believed to be a year-round resident throughout its range.[4]

Feeding

The Ceara woodcreeper's diet and foraging behavior have not been detailed but they are assumed to be similar to those of its former "parent", the lesser woodcreeper (which see here: Lesser woodcreeper#Feeding).[4]

Breeding

Nothing is known about the Ceara woodcreeper's breeding biology.[4]

Dickcissel male perched on a metal pole singing, with neck stretched and beak open.

Songs and calls
Listen to Ceara woodcreeper on xeno-canto

Vocalization

The Ceara woodcreeper's song is similar to that of the lesser woodcreeper (which see here: Lesser woodcreeper#Vocalization), but it has fewer and sharper introductory notes and an ascending trill.[4] Their calls are thought to be alike[4]: a "very high, sharp 'fieet fieet' "[5] and "doubled 'peep, peesp' and single 'speel' or 'wik' "[6].

Status

The IUCN originally assessed the Ceara woodcreeper as being of Least Concern but in 2021 reclassified it as Vulnerable. It has a limited range and its estimated population of 5000 to 11,000 mature individuals is believed to be decreasing. "The principal threats are forest loss and degradation due to urbanisation, conversion to agriculture and selective logging."[1] "Fairly common to common, but very few data on overall abundance, and its ability to adapt to fragmented or otherwise degraded areas is imperfectly known."[4]

References

  1. ^ a b c BirdLife International (2021). "Atlantic Woodcreeper Xiphorhynchus antlanticus". IUCN Red List of Threatened Species. 2021: e.T103669815A199390872. doi:10.2305/IUCN.UK.2021-3.RLTS.T103669815A199390872.en. Retrieved 28 June 2023.
  2. ^ a b Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (January 2023). "Ovenbirds, woodcreepers". IOC World Bird List. v 13.1. Retrieved 27 April 2023.
  3. ^ 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 31 May 2023. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved May 31, 2023
  4. ^ a b c d e f g h i del Hoyo, J., N. Collar, and G. M. Kirwan (2020). Ceara Woodcreeper (Xiphorhynchus atlanticus), 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.leswoo4.01 retrieved June 28, 2023
  5. ^ van Perlo, Ber (2009). A Field Guide to the Birds of Brazil. New York: Oxford University Press. p. 204. ISBN 978-0-19-530155-7.
  6. ^ Marantz, C. A., A. Aleixo, L. R. Bevier, M. A. Patten, and G. M. Kirwan (2020). Lesser Woodcreeper (Xiphorhynchus fuscus), 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.leswoo2.01 retrieved June 29, 2023
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