American pipit

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American pipit
Anthus rubescens -Harney County, Oregon, USA-8.jpg
Nominate subspecies in Oregon, USA
American pipit recorded in Minnesota
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Motacillidae
Genus: Anthus
Species:
A. rubescens
Binomial name
Anthus rubescens
(Tunstall, 1771)
Anthus rubescens map.svg
American pipit (left)
  Breeding
  Migration
  Wintering
Synonyms

Anthus pensilvanicus

The American pipit (Anthus rubescens), formerly known as the Buff-bellied pipit, is a small songbird native to North America. It was first described by Marmaduke Tunstall in his 1771 Ornithologia Britannica. [2] It was formerly classified as a form of the water pipit. The former subspecies, Siberian pipit, is now considered a distinct species.

Contents

Description

Like most other pipits, the American pipit is an undistinguished-looking species which usually can be seen to run around on the ground. It has lightly streaked grey-brown upperparts and is diffusely streaked below on the buff breast and flanks. The belly is whitish, the bill and legs are dark. The related Siberian pipit is darker above and has bolder black streaking on its whiter underparts; its legs have a reddish hue. [3] [4] The call is a squeaky sip. [4]

Measurements: [5]

Taxonomy

The scientific name is from Latin. Anthus is the name for a small bird of grasslands, and the specific rubescens means "reddish", from ruber, "ruddy". [6]

Three subspecies are currently recognized:

This species is closely related to European rock pipit (A. petrosus) and water pipit (A. spinoletta), all three forms having previously been considered conspecific. They can be differentiated by their vocalizations and some visual cues, but rock and American pipit are not found sympatrically except as vagrant individuals. [3] [8] [9]


Behavior

All subspecies of the American pipit are migratory. The American pipit winters on the Pacific coast of North America, and on the Atlantic coast from the southern North America to Central America. [1] At least regarding the American pipit, its wintering range seems to have expanded northwards in the 20th century and the birds seem to spend less time in winter quarters: in northern Ohio, for example, the species was recorded as "not common" during migration in May and September/October in the 1900s (decade), but today it is considered a "widespread migrant" in that region, found between March and May and from late September to November, with many birds actually wintering this far north. The American pipit is a rare vagrant to Western. [4] [10] [11] [12]

Like its relatives, this species is insectivorous. [13] The breeding habitat of American pipit is tundra, but outside the breeding season it is found in open lightly vegetated areas, similar to those favoured by the water pipit (A. spinoletta). [4]

Reproduction: from pairing to fledging

Egg, Collection Museum Wiesbaden Anthus rubescens MWNH 1588.JPG
Egg, Collection Museum Wiesbaden

The first thing American pipits do when they arrive on the breeding site, during snowmelt, is pairing. Indeed, males will start to fight one on one to win over the female and pair with it during the entire breeding season. They also fight for the snow-free sites that would be better for nesting. The moment is also very important because the melting snow implies an increase in arthropods abundance, which constitute the main food source for these birds. After the fight and the pairing, nesting is the next step. Nests are most often found on the ground in dry or wet meadows, always with a helpful protection, but they are never placed in shrubs or trees. [14] [15] The composition of the ideal nest depends on whatever is around the nesting area, but it is usually made of sedge, remains or new fine grass, and sometimes some horse hairs. [15] The final issue buff-bellied pipits have to deal with is nest success. The nest is indeed the target for numerous predators such as ants or hawks. If this step is successful, an egg can be produced. [15] The female will not lay an egg if the conditions, such as temperature and nesting site, are not optimal. If the first attempt fails, her time to lay an egg is reduced. In general, American pipits continuously lay eggs over a period of 4 to 5 days after snow-melt (in April–May) until mid-July. After this period, the male testes decrease in size and the female refuses any copulation. [16] The clutch size is usually 5 eggs but it can vary according to snowfalls, the parents' reproductive ability and predation. [14] Eggs are incubated for 13–14 days. [16] [17] During this time, the female does not leave the nest, but is still very reactive to any movement around her. She communicates by singing to the male that brings her food and defends their territory. Four or five days after hatching, the young is skinny, blue-gray in color, and only has its secondary feathers. For a week, the female will brood the clutch, but both parents will feed them. After these 7 days, the birds are ready for fledging but they will still be fed by their parents for 14 days after their departure. Finally, immature birds will form little flocks with other immature birds and wander off. [15] [17]

Status

It is a widespread and common species and not considered threatened by the IUCN. [1]

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References

  1. 1 2 3 BirdLife International (2019) [amended version of 2018 assessment]. "Anthus rubescens". IUCN Red List of Threatened Species . 2019: e.T22718575A155437845. doi: 10.2305/IUCN.UK.2018-2.RLTS.T22718575A155437845.en . Retrieved 11 November 2021.
  2. Tunstall, Marmaduke (1771): Ornithologia Britannica: seu Avium omnium Britannicarum tam terrestrium, quam aquaticarum catalogus, sermone Latino, Anglico et Gallico redditus. J. Dixwell. London. [in Latin]
  3. 1 2 Alström, Per & Mild, Krister (1996). "The identification of Rock, Water and Buff-bellied Pipits". Alula . 2 (4): 161–175.
  4. 1 2 3 4 Svensson, Lars; Zetterström, Dan; Mullarney, Killian & Grant, Peter J. (1999): Collins Bird Guide. Harper & Collins, London. ISBN   0-00-219728-6
  5. "BTO BirdFacts | Buff-bellied Pipit". app.bto.org. Retrieved 2020-09-29.
  6. Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names. London, United Kingdom: Christopher Helm. pp.  49, 339. ISBN   978-1-4081-2501-4.
  7. Lee, Cin-Ty. "Siberian (A. r. japonicus) versus American Pipits (A. r. rubescens, pacificus, alticola) in basic plumage". www.surfbirds.com. Archived from the original on 2003-01-28. Retrieved 2021-10-25.
  8. Nazarenko, Aleksandr Aleksandrovich (1978). "О видовой самостоятельности голоценового конька – Anthus rubescens (Tunstall) Aves, Motacillidae" [On species validity of Anthus rubescens (Tunstall) Aves: Motacillidae]. Biulleten Moskovskogo Obshchestva Ispytatelei Prirody. Otdel Biologicheskii (in Russian). 57 (11): 1743–1744.
  9. Leonovich, V.V.; Deminia, G.V. & Veprintseva, O.D. (1997). "On the taxonomy and phylogeny of pipits (Genus Anthus, Motacillidae, Aves) in Eurasia". Biulleten Moskovskogo Obshchestva Ispytatelei Prirody. Otdel Biologicheskii. 102 (2): 14–22.
  10. Henninger, W.F. (1906). "A preliminary list of the birds of Seneca County, Ohio" (PDF). Wilson Bull. 18 (2): 47–60.
  11. Bangs, Outram (1932). "Birds of western China obtained by the Kelley-Roosevelts expedition". Field Mus. Nat. Hist. Zool. Ser. 18 (11): 343–379. doi: 10.5962/bhl.title.3192 .
  12. Ohio Ornithological Society (2004): Annotated Ohio state checklist Archived 2004-07-18 at the Wayback Machine .
  13. "American Pipit". Audubon. Retrieved 2024-04-22.
  14. 1 2 Norment, C.J. & Green, K. (2004). "Breeding ecology of Richard's pipit (Anthus novaeseelandiae) in the snowy mountains". Emu. 104 (4): 327–336. doi:10.1071/MU04006. S2CID   82117791.
  15. 1 2 3 4 Pickwell, G. (1947). "The American Pipit in Its Arctic-Alpine Home". The Auk. 64 (1): 1–14. doi: 10.2307/4080059 . JSTOR   4080059.
  16. 1 2 Hendricks, P. (2003). "Spring snow conditions, laying date, and clutch size in an alpine population of American pipits". J. Field Ornithol. 74 (4): 423–429. doi:10.1648/0273-8570-74.4.423. S2CID   86922377.
  17. 1 2 Verbeek, N. A. and P. Hendricks. (1994). American Pipit (Anthus rubescens), The Birds of North America Online (A. Poole, Ed.). Ithaca: Cornell Lab of Ornithology.