Golden-olive woodpecker explained

The golden-olive woodpecker (Colaptes rubiginosus) is a species of bird in the subfamily Picinae of the woodpecker family Picidae. It is found from Mexico south and east through Panama, in every mainland South American country except Chile, Paraguay, and Uruguay, and Trinidad and Tobago.[1] [2]

Taxonomy and systematics

The golden-olive woodpecker was originally described as the "brown woodpecker" (Picus rubiginosus).[3] It was later placed in the genus Piculus but since about 2007 has been moved into Colaptes by taxonomic systems.[4] [5] [6] [1] [7] [8]

The International Ornithological Committee (IOC) and BirdLife International's Handbook of the Birds of the World assign these 18 subspecies to the golden-olive woodpecker:[1] [8]

The American Ornithological Society and the Clements taxonomy add C. r. aeruginosus which IOC and HBW treat as a separate species, the bronze-winged woodpecker.[9] [7] [1] [8]

Further splittings of these subspecies have been proposed at various times but each is currently (2023) considered synonymous with a member of this list.[10]

According to some authors, the golden-olive woodpecker sensu lato and the grey-crowned woodpecker (C. auricularis) form a superspecies. However, research since 2010 has found that the golden-olive C. rubiginosus is not monophyletic, with some subspecies being more closely related to the grey-crowned woodpecker and others to the black-necked woodpecker (C. atricollis) than they are to other golden-olive subspecies.[5] [11] [12]

The specific epithet rubiginosus means "full of rust", describing the color of the bird's wings and back.

This article follows the 18-subspecies IOC/HBW model.

Description

The golden-olive woodpecker is 18to long. Males and females have the same plumage except on their heads. Adult males of the nominate subspecies C. r. rubiginosus have a slate gray forehead and crown with a red border and nape. They are pale buff to whitish from their lores around the eye to the red of the nape. They have a wide red malar stripe and a pale buffy white chin and upper throat; the last has heavy blackish streaks. Adult females have red only on their nape, and their malar area has streaks like the throat. Both sexes have mostly green upperparts with a bronze tinge; their rump and uppertail coverts are paler and barred with dark olive. Their flight feathers are dark brownish olive with greenish edges and some yellowish on the shafts. Their tail is brown. Their underparts are pale buffy yellow with blackish olive bars; the bars are closest together on the chest. Their medium-length bill is slaty gray to black, their iris deep dull red, and their legs gray to olive-gray. Juveniles are generally duller than adults and have less well-defined barring on their underparts.[10]

The other subspecies of golden-olive woodpeckers differ from the nominate in size, the color of their backs, and the base color and barring of their underparts. The differences are summarized in comparison to the nominate:[10]

Distribution and habitat

The subspecies of the golden-olive woodpecker are found thus:[1] [10]

The golden-olive woodpecker inhabits a very wide variety of landscapes, mostly semi-open to dense. They range from dry tropical thornscrubs to humid rainforests. Between those extremes are cloudforests, oak-pine woodland, dry deciduous forests, riparian thickets, and mangroves. They are often also found along the edges of forest, in scattered trees within clearings, and shade-grown coffee plantations. In elevation, the species ranges from near sea level to 2100m (6,900feet) in Mexico and between 750and in Central America, from sea level to 2800m (9,200feet) but usually between 350and in Venezuela, between 900and in Colombia, between 1000and in Argentina, and up to 2300m (7,500feet) in Ecuador, Peru, and Bolivia.[10]

Behavior

Movement

As far as is known, the golden-olive woodpecker is a year-round resident throughout its range.[10]

Feeding

The golden-olive woodpecker forages from the forest's mid level to the canopy, exploring the trunk, limbs, branches, and vines of large trees. It hunts by itself, in loose pairs, and as part of mixed species feeding flocks. It pecks, hammers, probes, prys, and sometimes gleans to capture its prey. Its primary diet is ants, termites, and wood-boring beetles and their larvae; it adds fruits and berries but rarely.[10] A note published in 2016 added Müllerian bodies to its known diet. These are growths that Cecropia plants produce to feed ants in a symbiotic relationship. [13]

Breeding

The golden-olive woodpecker's breeding season has not been determined for its whole range, but it appears to vary geographically. It breeds between January and May from Mexico to Colombia, from December or January to June or July in Ecuador and Peru, and the season perhaps includes October in Guyana. It excavates its nest cavity in a living or dead tree or palm, anywhere between 1.2and above the ground. Both sexes incubate the clutch of two to four eggs but the incubation period is not known. Both parents provision nestlings by regurgitation for the approximately 24 days between hatch and fledging.[10]

Vocal and non-vocal sounds

The golden-olive woodpecker's song is "a protracted rising rattling trill". Its other vocalizations include a repeated "loud, clear dree", a "single sharp deeeeh", a "sharp kyown", a "churr, choo-úr", a "liquid woick-woick-woick", and a "utzia-deek". It occasionally drums in "rolls very short, sometimes repeated at short intervals; sometimes as clearly separated strikes".[10]

Status

The IUCN has assessed the golden-olive woodpecker as being of Least Concern. It has an extremely large range but its population size is not known and is believed to be decreasing. No immediate threats have been identified. It is considered fairly common to common in most of its range and occurs in many protected areas. "This widespread species' ability to live in a wide variety of wooded habitats suggests that its future is secure."[10]

Further reading

External links

Notes and References

  1. Web site: Woodpeckers . IOC World Bird List . v 12.2 . Gill . F. . Donsker. D.. Rasmussen . P. . August 2022 . January 9, 2023 .
  2. 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 24 July 2022. Species Lists of Birds for South American Countries and Territories. https://www.museum.lsu.edu/~Remsen/SACCCountryLists.htm retrieved July 24, 2022
  3. Book: Swainson, William . Zoological Illustrations . Baldwin, Cradock, and Joy. I . 1820 . London .
  4. Benz . Brett W. . Robbins . Mark B. . Peterson . A. Townsend . 2006 . Evolutionary history of woodpeckers and allies (Aves: Picidae): Placing key taxa on the phylogenetic tree . Molecular Phylogenetics and Evolution . 40 . 2 . 389–399 . 10.1016/j.ympev.2006.02.021 . 16635580 .
  5. 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 24 July 2022. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved July 24, 2022
  6. Richard C. Banks, R. Terry Chesser, Carla Cicero, Jon L. Dunn, Andrew W. Kratter, Irby J. Lovette, Pamela C. Rasmussen, J. V. Remsen, Jr., James D. Rising, Douglas F. Stotz, and Kevin Winker. "Forty-ninth supplement to the American Ornithological Society's Check-list of North American Birds". The Auk 2008, vol. 125:758-768 retrieved January 27, 2023
  7. 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
  8. HBW and BirdLife International (2022) Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 7. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v7_Dec22.zip retrieved December 13, 2022
  9. Chesser, R. T., S. M. Billerman, K. J. Burns, C. Cicero, J. L. Dunn, B. E. Hernández-Baños, R. A. Jiménez, A. W. Kratter, N. A. Mason, P. C. Rasmussen, J. V. Remsen, Jr., D. F. Stotz, and K. Winker. 2022. Check-list of North American Birds (online). American Ornithological Society. https://checklist.aou.org/taxa
  10. del Hoyo, J., H. Winkler, D. A. Christie, and N. Collar (2022). Golden-olive Woodpecker (Colaptes rubiginosus), version 1.1. In Birds of the World (N. D. Sly, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.goowoo1.01.1 retrieved January 27, 2023
  11. Moore . W.S. . Overton . L.C. . Miglia . K.J. . 2011 . Mitochondrial DNA based phylogeny of the woodpecker genera Colaptes and Piculus, and implications for the history of woodpecker diversification in South America . Molecular Phylogenetics and Evolution . 58 . 76-84 .
  12. Dufort . M.J. . 2015 . An augmented supermatrix phylogeny of the avian family Picidae reveals uncertainty deep in the family tree . Molecular Phylogenetics and Evolution . 94 . 313-326 .
  13. Tórrez . Marvin A. . Arendt . Wayne J. . Díaz . Luis . 2016 . Consumption of Müllerian Bodies by Golden-olive Woodpecker (Colaptes rubiginosus) in Nicaragua's Highlands . Wilson Journal of Ornithology . 128 . 1 . 190–193 .

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