Brown creeper

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Brown creeper
Certhia-americana-001.jpg
Toronto, Canada
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Certhiidae
Genus: Certhia
Species:
C. americana
Binomial name
Certhia americana
Bonaparte, 1838
Certhia americana map.svg
  Breeding
  Year-round
  Nonbreeding

The brown creeper (Certhia americana), also known as the American treecreeper, is a small songbird, the only North American member of the treecreeper family Certhiidae.

Contents

Description

Adults are brown on the upper parts with light spotting, resembling a piece of tree bark, with white underparts. They have a long thin bill with a slight downward curve and a long stiff tail used for support as the bird creeps upwards. The male creeper has a slightly larger bill than the female. Brown creepers are smaller than white-breasted nuthatches but larger than golden-crowned kinglets. [2]

Measurements: [3]

Its voice includes single very high pitched, short, often insistent, piercing calls; see, or swee. The song often has a cadence like; pee pee willow wee or see tidle swee, with notes similar to the calls. Creepers in California have songs of four to nine syllables, except in the San Bernardino Mountains, where there are as many as nine to thirteen syllables per song, but within the same two second time frame. [4]

This species's avoidance of edges, cryptic plumage, and high-pitched vocalizations contribute to a low survey detection rate compared to other species. [5]

Distribution, habitat and range

Brown creepers are both migratory and year-round residents in North America. Their breeding habitat is mature forests, especially conifers, in Canada, Alaska and the northeastern and western United States, and they are non-breeding in the southern part of the United States. They are permanent residents through much of their range; many northern birds migrate to the southern half of the United States. Brown creeper has occurred as a vagrant to Bermuda and Central America's mountains in Guatemala, Honduras and the northern cordillera of El Salvador. Since 1966 the brown creeper has experienced a yearly 1.5% population increase throughout the northeastern and northwestern (Pacific coast) regions of its range. [6] The first breeding brown creepers in the Northwest Territories were detected in 2008, in the Liard Valley, which may be a result of northern range expansion. [5]

As a migratory species with a northern range, this species is a conceivable vagrant to western Europe. However, it is intermediate in its characteristics between common treecreeper and short-toed treecreeper, and has sometimes in the past been considered a subspecies of the former, although its closest relative seems to be the latter (Tietze et al., 2006). Since the two European treecreepers are themselves among the most difficult species on that continent to distinguish from each other, a brown creeper would probably not even be suspected, other than on a treeless western island, and would be difficult to verify even then.

Brown creepers prefer mature, moist, coniferous forests or mixed coniferous/deciduous forests. They are found in drier forests as well, including Engelman Spruce and larch forest in eastern Washington. They generally avoid the rainforest of the outer coast. While they generally nest in hardwoods, conifers are preferred for foraging.

Breeding brown creepers generally require trees of a large diameter, whose deeper bark furrows support large amounts of bark-dwelling invertebrates such as spiders to make up a foraging substratum. They also require continual renewal of snags,[ clarify ] with a preference for Balsam Fir in their New Brunswick breeding range. [7]

Brown creepers have been recorded breeding in the dry season (January–February) in Chalatenango Department, El Salvador, a behaviour unusual to insectivorous birds and shared in the region only by the golden-fronted woodpecker. [8]

Subspecies

Thirteen subspecies are recognised: [9]

Conservation status

The species has declined in much of North America but appears to be doing well in Washington, with a small (not significant) increase on the state's breeding bird survey since 1966. As with many of Washington's birds, the Cascades divide this species into two subspecies.

In Wyoming, brown creepers have been recognized as preferring habitat within large, intact and mature stands of spruces, firs, or lodgepole pine. It is therefore potentially vulnerable to logging, climate change, or replacement of those tree species by Ponderosa pine. [10] However, it is not considered a species of serious concern in that state. [11]

In New Brunswick, brown creepers have been shown to respond negatively to even moderate forestry. Conservation efforts in the province have focused on maintaining unmanaged patches with high densities of trees and snags in mature forest. [7]

Ivory-billed woodcreepers (Xiphorhynchus flavigaster) have been observed extracting brown creeper nestlings and dropping them away from the nest. [8]

Behavior

Brown creepers forage on tree trunks and branches, typically zig-zagging upwards from the bottom of a tree trunk, and then flying down to the bottom of another tree. They creep slowly with their body flattened against the bark, probing with their beak for insects. They will rarely feed on the ground. They mainly eat small arthropods found in the bark, but sometimes they will eat seeds in winter.

Breeding

Breeding season typically begins in April. The female will make a partial cup nest either under a piece of bark partially detached from the tree, or in a tree cavity. It will lay 3–7 eggs, and incubation lasts approximately two weeks. Both of the parents help feed the chicks. Parents both take turns feeding nestlings and removing fecal sacs from the nest. [8]

Related Research Articles

<span class="mw-page-title-main">Nuthatch</span> Genus, Sitta, of small passerine birds from the Northern Hemisphere

The nuthatches constitute a genus, Sitta, of small passerine birds belonging to the family Sittidae. Characterised by large heads, short tails, and powerful bills and feet, nuthatches advertise their territory using loud, simple songs. Most species exhibit grey or bluish upperparts and a black eye stripe.

<span class="mw-page-title-main">Treecreeper</span> Family of birds

The treecreepers are a family, Certhiidae, of small passerine birds, widespread in wooded regions of the Northern Hemisphere and sub-Saharan Africa. The family contains eleven species in two genera, Certhia and Salpornis. Their plumage is dull-coloured, and as their name implies, they climb over the surface of trees in search of food.

<span class="mw-page-title-main">Indian spotted creeper</span> Species of bird

The Indian spotted creeper is a small passerine bird, which is a member of the subfamily Salpornithinae which is placed along with the treecreepers in the family Certhiidae. This small bird has a marbled black and white plumage that makes it difficult to spot as it forages on the trunks of dark, deeply fissured trees where it picks out insect prey using its curved bill. It is found in patchily distributed localities mainly in the dry scrub and open deciduous forests of northern and central peninsular India. It does not migrate. Their inclusion along with the treecreepers is not certain and some studies find them more closely related to the nuthatches while others suggest a close relation to the wallcreeper. They lack the stiff tail feathers of treecreepers and do not use their tail for supporting them while creeping vertically along tree trunks.

<span class="mw-page-title-main">Australasian treecreeper</span> Family of birds

There are seven species of Australasian treecreeper in the passerine bird family Climacteridae. They are medium-small, mostly brown birds with patterning on their underparts, and all are endemic to Australia-New Guinea. They resemble, but are not closely related to, the Holarctic treecreepers. The family is one of several families identified by DNA–DNA hybridisation studies to be part of the Australo-Papuan songbird radiation. There is some molecular support for suggesting that their closest relatives are the large lyrebirds.

<span class="mw-page-title-main">Eurasian treecreeper</span> Small passerine bird found in temperate Eurasia

The Eurasian treecreeper or common treecreeper is a small passerine bird also known in the British Isles, where it is the only living member of its genus, simply as treecreeper. It is similar to other treecreepers, and has a curved bill, patterned brown upperparts, whitish underparts, and long stiff tail feathers which help it creep up tree trunks. It can be most easily distinguished from the similar short-toed treecreeper, which shares much of its European range, by its different song.

<span class="mw-page-title-main">Short-toed treecreeper</span> Species of bird

The short-toed treecreeper is a small passerine bird found in woodlands through much of the warmer regions of Europe and into north Africa. It has a generally more southerly distribution than the other European treecreeper species, the common treecreeper, with which it is easily confused where they both occur. The short-toed treecreeper tends to prefer deciduous trees and lower altitudes than its relative in these overlap areas. Although mainly sedentary, vagrants have occurred outside the breeding range.

<span class="mw-page-title-main">Yellow-rumped warbler</span> Species of bird

The yellow-rumped warbler is a regular North American bird species that can be commonly observed all across the continent. Its extensive distribution range connects both the Pacific and Atlantic coasts of the U.S. as well as Canada and Central America, with the population concentrating in the continent's northern parts during the breeding season and migrating southwards to southern North and Central America in Winter. The species generally prefers coniferous forests or mixed coniferous-deciduous forests as its breeding habitat, while during the winter it can be found inhabiting more open areas such as shrublands that offer food resources. The diet of the yellow-rumped warbler is based primarily on insects, though the species does eat fruits such as juniper berries as well, especially in winter.

<span class="mw-page-title-main">Blackburnian warbler</span> Species of bird

The Blackburnian warbler is a small New World warbler. They breed in eastern North America, from southern Canada, westwards to the southern Canadian Prairies, the Great Lakes region and New England, to North Carolina.

<span class="mw-page-title-main">Northern parula</span> Species of bird

The northern parula is a small New World warbler. It breeds in eastern North America from southern Canada to Florida.

<span class="mw-page-title-main">Boreal chickadee</span> Species of bird

The boreal chickadee is a small passerine songbird in the tit family Paridae. It is found in the boreal forests of Alaska, Canada and the northern United States and remains within this range all year. This bird is known for its high pitched trill patterns used in communication with other birds and food storage habits in preparation for winter months.

<span class="mw-page-title-main">White-throated treecreeper</span> Species of bird

The white-throated treecreeper is an Australian treecreeper found in the forests of eastern Australia. It is unrelated to the northern hemisphere treecreepers. It is a small passerine bird with predominantly brown and white plumage and measuring some 15 cm (6 in) long on average. It is insectivorous, eating mainly ants. Unlike treecreepers of the genus Climacteris, the white-throated treecreeper does not engage in cooperative breeding, and wherever it overlaps with species of that genus, it feeds upon much looser bark besides typically using different trees.

<i>Certhia</i> Genus of birds

Certhia is the genus of birds containing the typical treecreepers, which together with the African and Indian spotted creepers make up the family Certhiidae.

<span class="mw-page-title-main">Scarlet myzomela</span> Species of bird

The scarlet myzomela or scarlet honeyeater is a small passerine bird of the honeyeater family Meliphagidae native to Australia. It was first described by English ornithologist John Latham in 1801. At 9 to 11 cm long, it is the smallest honeyeater in Australia. It has a short tail and relatively long down-curved bill. It is sexually dimorphic; the male is a striking bright red with black wings, while the female is entirely brown. The species is more vocal than most honeyeaters, and a variety of calls have been recorded, including a bell-like tinkling.

<span class="mw-page-title-main">Pale-billed woodpecker</span> Species of bird

The pale-billed woodpecker is a species of bird in subfamily Picinae of the woodpecker family Picidae. It is found from Mexico to Panama.

<span class="mw-page-title-main">Brown treecreeper</span> Species of bird

The brown treecreeper is the largest Australasian treecreeper. The bird, endemic to eastern Australia, has a broad distribution, occupying areas from Cape York, Queensland, throughout New South Wales and Victoria to Port Augusta and the Flinders Ranges, South Australia. Prevalent nowadays between 16˚S and 38˚S, the population has contracted from the edges of its pre-European range, declining in Adelaide and Cape York. Found in a diverse range of habitats varying from coastal forests to mallee shrub-lands, the brown treecreeper often occupies eucalypt-dominated woodland habitats up to 1,000 metres (3,300 ft), avoiding areas with a dense shrubby understorey.

<span class="mw-page-title-main">Hawaiʻi creeper</span> Species of bird

The Hawaiʻi creeper, Hawaii creeper or ʻalawī is a species of Hawaiian honeycreeper endemic to the Big Island of Hawaiʻi. Its natural habitats are dry forests and montane moist forests at elevations of 1,000–2,300 metres (3,300–7,500 ft). There are a total of 12,000 birds separated into three populations. A fourth population on the western part of the island probably represents migratory birds from one of the existing population. The Hawaiʻi creeper measures 4.5 inches (11 cm) and has drab green plumage. In 2017 the traditional Hawaiian name was rediscovered as 'alawi'.

<span class="mw-page-title-main">Pipipi</span> Species of bird

The pipipi, also known as brown creeper, New Zealand creeper or New Zealand titmouse, is a small passerine bird endemic to the South Island of New Zealand. They are specialist insectivores, gleaning insects from branches and leaves. They have strong legs and toes for hanging upside down while feeding.

<span class="mw-page-title-main">White-browed treecreeper</span> Species of bird

The white-browed treecreeper is the smallest of the Australo-papuan treecreepers and sole family member adapted to arid environments. The species foraging strategy involves climbing the trunks of trees in search of invertebrate prey on and under bark. Although some populations within the species range have declined, the species IUCN conservation status is of Least Concern.

<span class="mw-page-title-main">Hodgson's treecreeper</span> Species of bird

Hodgson's treecreeper is a small passerine bird from the southern rim of the Himalayas. Its specific distinctness from the common treecreeper was recently validated.

<span class="mw-page-title-main">African spotted creeper</span> Species of bird

The African spotted creeper is a small passerine bird, which is a member of the subfamily Salpornithinae of the treecreeper family Certhiidae. It is found in sub-Saharan Africa in open deciduous forest and mango groves. It does not migrate other than local movements.

References

  1. BirdLife International (2016). "Certhia americana". IUCN Red List of Threatened Species . 2016: e.T22711244A94285552. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22711244A94285552.en . Retrieved 12 November 2021.
  2. "Brown Creeper". All About Birds.
  3. "Brown Creeper Identification, All About Birds, Cornell Lab of Ornithology". www.allaboutbirds.org. Retrieved 2020-09-28.
  4. Baptista, Luis F.; Krebs, Robin (2000). "Vocalizations and relationships of Brown Creepers Certhia americana: a taxonomic mystery". Ibis. 142 (3): 457–465. doi:10.1111/j.1474-919X.2000.tb04442.x.
  5. 1 2 Olson, Cory R.; Hannah, Kevin C.; Gray, Christine (Autumn 2009). "First Confirmed Record of Breeding Brown Creepers in the Northwest Territories, Canada". Northwestern Naturalist. 90 (2): 156–159. doi:10.1898/NWN08-36.1. S2CID   84936362.
  6. "Brown Creeper Certhia americana - BBS Trend Map, 1966 - 2015". USGS. US Department of the Interior. Retrieved 2021-04-27.
  7. 1 2 Poulin, Jean-François; Villard, Marc-André; Edman, Mattias; Goulet, Pierre J.; Eriksson, Anna-Maria (April 2008). "Thresholds in nesting habitat requirements of an old forest specialist, the Brown Creeper (Certhia americana), as conservation targets". Biological Conservation. 141 (4): 1129–1137. Bibcode:2008BCons.141.1129P. doi:10.1016/j.biocon.2008.02.012 via Science Direct.
  8. 1 2 3 Funes, Carlos; Bolaños, Oscar; Komar, Oliver (1 March 2012). "Breeding of the Brown Creeper (Certhia americana) in Central America". The Wilson Journal of Ornithology. 124 (1): 177–179. doi:10.1676/11-076.1. S2CID   83933957 via BioOne Complete.
  9. Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (January 2023). "Nuthatches, Wallcreeper, treecreepers, mockingbirds, starlings, oxpeckers". IOC World Bird List Version 13.1. International Ornithologists' Union. Retrieved 29 March 2023.
  10. Faulkner, Douglas W. (2010). Birds of Wyoming, p. 188. Greenwood Village, CO: Roberts and Company Publishers.
  11. Wyoming Game and Fish Department (2017). State Wildlife Action Plan: Species of Greatest Conservation Need. https://wgfd.wyo.gov/WGFD/media/content/PDF/Habitat/SWAP/Wyoming-SGCN.pdf

Further reading