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Comprehensive Description

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Tachornis phoenicobia

*Formerly resident but no confirmed records in recent decades (Garrido, in litt., 4 November 1987).

Differentiation of insular populations in the southern cayerias appears to be due both to in situ evolution and to the persistence of relictual forms once probably found on the mainland. In most instances, in situ evolution has produced parallel similarities in the populations of the two main archipelagos, Los Canarreos and Jardines de la Reina. Examples of this are the forms of Xiphidiopicus percussus, Contopus caribaeus, and Agelaius humeralis. Specimens of Xiphidiopicus from Los Canarreos and the Jardines de la Reina are distinctly smaller and less vividly colored than those of the mainland, although the material available to us was not sufficient to say whether these two populations can be distinguished from one another. Specimens of Agelaius humeralis from the Jardines de la Reina and from Cayo Cantiles are smaller than those from the mainland, with those from Cantiles being markedly so, with a more slender bill.

In a similar situation, the populations of Contopus caribaeus in each archipelago have independently experienced a reduction in the buffy coloration of the plumage. However, because the ancestral mainland populations in the east differ in intensity of coloration from those in the west, the two insular forms may also be distinguished from one another. In reviewing the lizards of the Leiocephalus cubensis complex, Schwartz (1959) remarked on the similarity between L. c. paraphrus of the Jardines and L. c. pambasileus of the Canarreos, and he postulated an independent origin of each from different populations on the Cuban mainland. These differences must have evolved in parallel because, as outlined above, the two groups of islands were never directly connected to one another.

Other apparent in situ differentiation involves Melanerpes superciliaris, with named forms from the Cayos San Felipe and Cayo Largo, and a possibly distinct population on Cayo Avalos (but the nominate subspecies occurs on Cayo Cantiles), and Vireo gundlachi, with a weak, if valid, subspecies in the Cayos San Felipe and a distinct isolate on Cayo Cantiles.

Possible or probable examples of relictual populations include Turdus plumbeus, with an enigmatic specimen, possibly of hybrid origin, from Cayo Caballones in the Jardines de la Reina, and Quiscalus niger, with the subspecies Q. n. caribaeus persisting in the northern and southern cayerias, including the Isle of Pines, and the westernmost mainland of Cuba, having apparently been replaced elsewhere on the mainland by Q. n. gundlachi.
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bibliographic citation
Buden, Donald W., Olson, Storrs L., and Bartsch, Paul. 1989. "The avifauna of the cayerias of southern Cuba, with the ornithological results of the Paul Bartsch Expedition of 1930." Smithsonian Contributions to Zoology. 1-34. https://doi.org/10.5479/si.00810282.477

Antillean palm swift

provided by wikipedia EN

The Antillean palm swift (Tachornis phoenicobia) is a species of bird in subfamily Apodinae of the swift family Apodidae. It is found on the Caribbean islands of Cuba, Jamaica, and Hispaniola (shared by the Dominican Republic and Haiti).[2][3]

Taxonomy and systematics

The Antillean palm swift has two subspecies: the nominate T. p. phoenicobia Gosse, 1847, and T. p. iradii (Lembeye, 1850).[2]

Description

The Antillean palm swift is 9 to 11 cm (3.5 to 4.3 in) long and weighs about 9 to 11 g (0.32 to 0.39 oz). It has long narrow wings and a medium length forked tail. The sexes are alike. Adults of the nominate subspecies have a dark sooty brown crown and nape. Their back, a narrow center strip of the rump, uppertail coverts, and tail are sooty black to black. The sides of their rump are white. Their wings are sooty blackish with pale edges on the flight feathers. Most of their face is grayish brown. Their underparts are mostly dull white; their flanks, a narrow band across the breast, and undertail coverts are dark sooty brown. Immatures are similar to adults, but their underparts are an even duller white, and the flanks and undertail coverts a paler sooty brown.[4]

The subspecies T. p. iradii is somewhat larger than the nominate, and has a more deeply forked tail. Its back is more sooty than black, its face has more extensive grayish brown, and its flanks are a paler sooty brown.[4]

Distribution and habitat

The nominate subspecies of Antillean palm swift is found on Jamaica, Hispaniola, and some small islands off the latter's coast. T. p. iradii is found on mainland Cuba and Isla de la Juventud.[2] The species has been documented as a vagrant in Florida[5] and there are sight records from Puerto Rico, the Cayman Islands, Inagua in The Bahamas, and the Turks and Caicos Islands.[6]. The Antillean palm swift is seen over dry grassy areas that have patches of palms, scrublands, forest, and suburban and urban areas. In elevation, it ranges as high as 1,700 m (5,600 ft) on Hispaniola and 1,200 m (3,900 ft) on Jamaica.[4]

Behavior

Movement

The Antillean palm swift is a year-round resident throughout its range, though individuals have wandered outside it.[4]

Feeding

Like all swifts, the Antillean palm swift is an aerial insectivore. It forages low to the ground, usually over vegetation, and usually in small flocks of its species. It sometimes forages with swallows. Details of its diet are lacking.[4]

Breeding

The Antillean palm swift's breeding season on Cuba is May to July, and on Hispaniola, from March to May. It makes a hanging pouch nest of plant fibers and feathers glued together with saliva and hung on the outside of a dead drooping palm frond. It nests in small colonies. The clutch size is two to five; both parents incubate the eggs and care for nestlings.[4]

Vocalization

The Antillean palm swift's flight call is described as "noisy...an almost constant, weak, twittering, tooee-tooee".[4]

Status

The IUCN has assessed the Antillean palm swift as being of Least Concern. It has a large range, and though its population size is not known it is believed to be stable. No immediate threats have been identified.[1] "This swift is adaptable to living around human habitations, and the planting of decorative palms provides nest sites for these birds."[4]

References

  1. ^ a b BirdLife International (2016). "Antillean Palm-swift Tachornis phoenicobia". IUCN Red List of Threatened Species. 2016: e.T22686742A93124942. doi:10.2305/IUCN.UK.2016-3.RLTS.T22686742A93124942.en. Retrieved 7 October 2022.
  2. ^ a b c Gill, F.; Donsker, D.; Rasmussen, P., eds. (August 2022). "Owlet-nightjars, treeswifts, swifts". IOC World Bird List. v 12.2. Retrieved August 9, 2022.
  3. ^ HBW and BirdLife International (2021) Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 6. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v6_Dec21.zip retrieved August 7, 2022
  4. ^ a b c d e f g h Damaj, O. (2020). Antillean Palm-Swift (Tachornis phoenicobia), version 1.0. In Birds of the World (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.anpswi.01 retrieved October 7, 2022
  5. ^ "Official Florida State Bird List". Florida Ornithological Society. October 7, 2022. Retrieved August 10, 2021.
  6. ^ "Antillean Palm-swift eBird Species Map". Cornell Lab of Ornithology. Retrieved October 7, 2022.
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Antillean palm swift: Brief Summary

provided by wikipedia EN

The Antillean palm swift (Tachornis phoenicobia) is a species of bird in subfamily Apodinae of the swift family Apodidae. It is found on the Caribbean islands of Cuba, Jamaica, and Hispaniola (shared by the Dominican Republic and Haiti).

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