Last edited by Vugrel
Thursday, August 13, 2020 | History

2 edition of Biology of the yellow-shouldered blackbird--Agelaius on a tropical island found in the catalog.

Biology of the yellow-shouldered blackbird--Agelaius on a tropical island

William Post

Biology of the yellow-shouldered blackbird--Agelaius on a tropical island

by William Post

  • 38 Want to read
  • 7 Currently reading

Published by FSM, University of Florida in Gainesville .
Written in English

    Subjects:
  • Agelaius.,
  • Birds -- Puerto Rico.,
  • Blackbirds

  • Edition Notes

    Bibliography: p. 198-202.

    StatementWilliam Post.
    SeriesBulletin of the Florida State Museum -- v. 26, no. 3
    Classifications
    LC ClassificationsQH1 .F6 vol. 26, no. 3, QL696.P2475 .F6 vol. 26, no. 3
    The Physical Object
    Paginationp. 126-202 :
    Number of Pages202
    ID Numbers
    Open LibraryOL20815735M

    A similar species that is often mistaken for the Hispaniolan oriole is the yellow-shouldered blackbird (Agelaius xanthomus), which is a similar size but only has yellow patches on the shoulders. Vocalization. The call of the Hispaniolan oriole is described as a sharp keck or check. Some accounts say it sounds as if the bird has a cold. The yellow-shouldered blackbird Agelaius xanthomus, endemic to Puerto Rico and Mona Island, is endangered, mainly because of brood parasitism by the shiny cowbird Molothrus bonariensis, which reached Puerto Rico at least 30 years ago. The yellow-shouldered blackbird populations have since declined, about ? remaining (? on Mona Island) by ? compared to a .

    The Yellow-shouldered Blackbird (Agelaius xanthomus) is a species of concern belonging in the species group "birds" and found in the following area(s): Puerto Rico. Creature Profile Share. The rare yellow-shouldered blackbird is similar to its North American relative the red-winged blackbird. Its body is 7 to 9 inches (18 to 23 centimeters) long and dark gray in color. A distinctive yellow patch on its shoulder gives the bird its common name. Females are smaller than males. The bird.

      USFWS () Yellow-shouldered blackbird (Agelaius xanthomus) revised recovery plan. U.S. Fish and Wildlife Service, Atlanta, pp 1–77 Google Scholar USFWS () Mariquita or yellow-shouldered blackbird (Agelaius xanthomus) 5-year review: summary and evaluation. The recognized subspecies A. x. monensis, or Mona Yellow-shouldered Blackbird, was described by Barnes in from the islands of Mona and Monito. Physical description The Yellow-shouldered Blackbird, as its name implies, is a glossy black bird with a small yellow humeral patch around its "shoulders" outlined by a white margin.


Share this book
You might also like
The sharp hook of love

The sharp hook of love

Nicolai Albertowich Fuchs

Nicolai Albertowich Fuchs

Registration of title to land

Registration of title to land

Navy ship propulsion

Navy ship propulsion

geometric introduction to linear algebra.

geometric introduction to linear algebra.

Pre-famine Ireland

Pre-famine Ireland

Twenty second report of the Diocesan Church Society of New Brunswick, 1857-8

Twenty second report of the Diocesan Church Society of New Brunswick, 1857-8

Lanark in old picture postcards

Lanark in old picture postcards

Angels cry sometimes

Angels cry sometimes

The counterfeit murder in the Museum of Man

The counterfeit murder in the Museum of Man

For the Relief of John Donovan (H.R. 7554). Mr. Chavez

For the Relief of John Donovan (H.R. 7554). Mr. Chavez

Metamorphic Map of Europe

Metamorphic Map of Europe

Evolution of a pewter plate

Evolution of a pewter plate

Public building at Manchester, N. H.

Public building at Manchester, N. H.

Biology of the yellow-shouldered blackbird--Agelaius on a tropical island by William Post Download PDF EPUB FB2

Biology of the yellow-shouldered blackbird--Agelaius on a tropical island. [William Post] Home. WorldCat Home About WorldCat Help. Search. Search for Library Items Search for Lists Search for Contacts Search for a Library.

Create Book\/a>, schema:CreativeWork\/a>. BIOLOGY OF THE YELLOW-SHOULDERED BLACKBIRD-AGELAIUS ON A TROPICAL ISLAND WILLIAM POSTI SYNOPSIS: The ellow-shouldered Blackbird (Agelaius xanthomus) nests in mangroves, seat-tered trees in pastures, and in suburbs.

In the most frequently used habitat, mangroves, birds use isolated cays or scattered trees in salt pans. BIOLOGY OF THE YELLOW-SHOULDERED BLACKBIRD-AGELAIUS ON A TROPICAL ISLAND WILLIAM POST' SvNopSIS: The Yellow-shouldered Blackbird (Agelaius xanthomus) nests in mangroves, scat-tered trees in pastures, and in suburbs.

In the most frequently used habitat, mangroves, birds use isolated cays or scattered trees in salt pans. The Yellow-shouldered Blackbird (Agelaius xanthomus), of Puerto Rico, Mona, and nearby islands, has become uncommon and restricted in range since aboutand probably fewer than 3, individuals remain (Post and Wiley ).

Biology of the yellow-shouldered blackbird-Agelaius on a tropical island (FLMNH Bulletin v, no.3) Title. Criteria: B2ab(iii,v) Click here for more information about the Red List categories and criteria Justification of Red List category This species has a very small range and its population is predicted to decline.

As a result, the species is listed as Endangered. Population size: Population trend: Decreasing Extent of occurrence (breeding/resident): 9, km 2 Country endemic: Yes.

Ina population and habitat viability analysis (PHVA) modelled the outcomes of different management strategies and found that, even with incumbent management practices, the yellow-shouldered blackbird is currently experiencing a negative growth rate with a 31 % chance of extinction in the next 50 years (Medina-Miranda et al.

Biology of the Yellow-shouldered Blackbird-Agelaius on a tropical island. Post. Bull. Fla. State Mus. Biol. Sci. The comparative approach to social behavior has proven to be quite powerful. For example, theories relating the social systems of animals to ecological factors have been satisfactorily tested by comparing the.

Although the remnant populations of Yellow-shouldered Blackbird have peculiar nesting habits that make the species as a whole appear highly specialized, this appears to be a recent development that arose because its other breeding strategies proved more vulnerable to.

In the interior of the island the Yellow-shouldered Blackbird is scarce (P•rez-Rivera). In the same areas, the cowbird is Biology of the Yellow-shouldered Blackbird (Agelaius xanthoraus) on a tropical island.

Bull. State Mus. Biol. Sci. •, AND J. WILEY. The Yellow-shouldered Blackbird--present and future. Red-shouldered Blackbird, Agelaius assimilis Icteridae (TROUPIALS & ALLIES) Red-shouldered Blackbird, Agelaius assimilis This photo was taken in: Cuba This photo was taken with: Nikon through Swaravski 80HD scope The photo was taken by: Steve and Feli Cook, Birdwatching trip reports Cuba reports Reports from The yellow-shouldered blackbird Agelaius xanthomus, endemic to Puerto Rico and Mona Island, is endangered, mainly because of brood parasitism by the shiny cowbird Molothrus bonariensis, which.

Yellow-shouldered Blackbird (Agelaius xanthomus) Revised Recovery Plan. Atlanta, Georgia. 77 pp. U.S. Fish and Wildlife Service. Yellow-shouldered Blackbird (Agelaius xanthomus) 5-Yr Review and Summary. Atlanta, Georgia. 34 pp. Vincenty, M. Yellow Warbler (Dendroica petechia) breeding biology and parasitism by the shiny cowbird.

The yellow-shouldered blackbird Agelaius xanthomus, endemic to Puerto Rico and Mona Island, is endangered, mainly because of brood parasitism by the shiny cowbird Molothrus bonariensis, which reached Puerto Rico at least 30 years yellow-shouldered blackbird populations have since declined, about – remaining (– on Mona Island) by.

The yellow-shouldered blackbird (Agelaius xanthomus), also known as la Mariquita de Puerto Rico or capitán, is a diurnal blackbird endemic to the archipelago of Puerto Rico and belongs to the genus Agelaius of the family has black plumage with a prominent yellow shoulder on its wing.

Adult males and females are of similar appearance. The species is predominantly insectivorous. The yellow-shouldered blackbird, Agelaius xanthomus, is endemic to Puerto Rico and Mona Island, and endangered since mainly because of brood parasitism by the shiny cowbird, Molothrus an artificial nest structures program was initiated, combined with the removal of M.

bonariensis, to improve the reproductive success of A. xanthomus. Abstract. The yellow-shouldered blackbird (Agelaius xanthomus) is a managed endemic species in Puerto Rico that experienced a bottleneck in the s and currently faces high levels of brood parasitism and habitat is known about its overall genetic profile and genetic mating system, which potentially shapes effective population size by contributing to variation in reproductive success.

Icterids / Blackbirds. The Yellow-shouldered Blackbird (Agelaius xanthomus), La Mariquita de Puerto Rico or Capitán is a diurnal blackbird endemic to the archipelago of Puerto Rico and one of the eleven species belonging to the Agelaius genus of the Icteridae family.

Taxonomy. The nominate form of the Yellow-shouldered Blackbird (A. xanthomus) was first described from Puerto Rico and. The native wildlife of tropical islands are particularly vulnerable to the invasion of exotic species. On two occasions in we observed adults of Yellow-shouldered Blackbird (Agelaius.

The Yellow-shouldered Blackbird nests in small colonies of pairs, about metres apart from each other. They breed on small offshore islands, abandoned salt ponds, mangroves, palm groves and trees in pastures.

The race “monensis” breeds between February and November, and nests on sea-cliffs on Mona Island. An inhabitant of coastal mangroves and nearby scrublands. This species is all black, except for a bright yellow shoulder patch—a combination that eliminates all other species in its range.

At times, the shoulder patch is hidden such that it can resemble the Shiny Cowbird. The Shiny Cowbird has glossier plumage and a shorter, thicker bill. Vocalizations include a rough “chet” or “chulp. of our work, we found the Yellow-shouldered Blackbird (Agelaius xanthomus) to be the main host of the cowbird.

Seventy-six percent of 84 Yellow-shouldered Blackbird nests con-tained cowbird eggs, and brood parasitism reduced the reproductive output of the black-bird. A. xanthomus, endemic to Puerto Rico and Mona Island, has been declining since.Extra‐pair paternity (EPP) is a widespread and highly variable reproductive phenomenon in birds.

We tested the effects of habitat, spatial factors, and timing of breeding on the occurrence of EPP in red‐winged blackbirds (Agelaius phoeniceus).We used PCR‐amplified microsatellites to assess the paternity of nestlings from broods on territories over four breeding seasons.Identification record: Yellow-shouldered Blackbird (Agelaius xanthomus) is a bird which belongs to the family of Ictéridés and the order of Passeriformes.

Species List of birds of Metropolitan France.