Category Archive: Acrocephalidae

Aug 01 2014

Rarest birds in the World: Nightingale Reed-warbler (Acrocephalus luscinius)

This species qualifies as Critically Endangered because the very rapid rate of decline is expected to increase owing to habitat loss and degradation. This is combined with the impact of introduced predators including brown tree snake on Saipan. It is a 18 cm large, scruffy-looking warbler with long bill and erect head feathers when singing. …

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Permanent link to this article: http://www.planetofbirds.com/thr-rarest-birds-in-the-world-nightingale-reed-warbler-acrocephalus-luscinius

Aug 01 2014

Rarest birds in the World: the Millerbird (Acrocephalus familiaris)

This species occurs on one extremely small island and undergoes marked population fluctuations, owing to climatic events, reducing it to tiny numbers. It is a 13 cm small, inconspicuous, thin-billed warbler. Brown above, darkest on crown, white below. It sings a simple song of rapid, metallic notes. It is endemic to the steep, rocky island …

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Permanent link to this article: http://www.planetofbirds.com/rarest-birds-in-the-world-the-millerbird-acrocephalus-familiaris

Dec 27 2011

Will the real Sykes’s Warbler please stand up? Breeding data support specific status forHippolais rama and H. caligata, with comments on the Arabian population of

Sykess Warbler (Iduna rama) Science Article 1 abstract In early-January 2000, one of us (GMK) received a communication from Michael Walters, the former Curator of Eggs at the Natural History Museum (Tring), concerning a recent short note by Castell (1999, see below) within these pages, in which a nest, apparently of Hippolais rama, was depicted. …

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Permanent link to this article: http://www.planetofbirds.com/sykess-warbler-article-1

Dec 27 2011

Survival rates of adult Reed Warblers Acrocephalus scirpaceus at a northern and southern site in England

Sedge Warbler (Acrocephalus schoenobaenus) Science Article 10 abstract Mark-recapture ringing data from Wicken Fen in Cambridgeshire and Gosforth Park in Newcastle upon Tyne were used to estimate adult survival rates in a southerly and a northerly population of Reed Warblers in England. The computer program MARK was used to estimate survival and recapture rates, adjusted …

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Permanent link to this article: http://www.planetofbirds.com/sedge-warbler-article-10

Dec 27 2011

Movement patterns of European Reed Warblers Acrocephalus scirpaceus and Sedge Warblers A. schoenobaenus before and during autumn migration.

Sedge Warbler (Acrocephalus schoenobaenus) Science Article 9 abstract The foraging movements of European Reed Warblers Acrocephalus scirpaceus and Sedge Warblers Acrocephalus schoenobaenus at migratory stopover sites were studied by comparing the frequency distribution of distances between capture-recapture localities of individual birds with a simulation model of a random distribution of movements. The results indicate that …

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Permanent link to this article: http://www.planetofbirds.com/sedge-warbler-article-9

Dec 27 2011

Stabilising selection on wing length in reed warblers Acrocephalus

Sedge Warbler (Acrocephalus schoenobaenus) Science Article 5 abstract The size of an animal is of utmost importance for its overall success and each species isthought to have its own optimal size. If this is true, size traits ought to be understabilising selection unless the animal is living in a highly unstable environment. Winglength is a …

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Dec 27 2011

Song and the song control pathway in the brain can develop independently of exposure to song in the sedge warbler

Sedge Warbler (Acrocephalus schoenobaenus) Science Article 7 abstract Previous studies have shown that female sedge warblers choose to mate with males that have more complexsongs, and sexual selection has driven the evolution of both song complexity and the size of the majorsong control area (HVc) in the brain. In songbirds, learning from conspeci? cs plays …

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Dec 27 2011

Fat and pectoral muscle in migrating Sedge Warblers Acrocephalus schoenob nus

Sedge Warbler (Acrocephalus schoenobaenus) Science Article 1 abstract Increases in fat and pectoral muscle mass are important physiological changes associated with migration, but the extent to which these are linked is uncertain. The relationship between fat and pectoral muscle in first-year Sedge Warblers Acrocephalus schoenob nus was investigated using the carcasses of 20 birds that …

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Dec 27 2011

Dutch Sedge Warblers Acrocephalus schoenobaenus and West-African rainfall: Empirical data and simulation modelling show low population resilience in fragmented marshlands.

Sedge Warbler (Acrocephalus schoenobaenus) Science Article 8 abstract Sedge Warbler populations in The Netherlands have declined dramatically over the last 25 years, especially between 1973-75 and 1982-85. Population declines correlate with yearly rainfall in the western part of the Sahel-Soudan zone, the most probable wintering area of West-European birds (after removing effects of autocorrelation, rs …

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Dec 27 2011

How does age and body condition affect migratory restlessness and orientation in Reed Warblers Acrocephalus scirpaceus?

Sedge Warbler (Acrocephalus schoenobaenus) Science Article 2 abstract Orientation cage experiments were performed with 260 Reed Warblers on the southern coast of Spain during autumn 1996, in order to test the hypothesis that birds in good body condition should exhibit a higher amount of migratory restlessness and an activity concentrated more strongly towards one direction …

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Permanent link to this article: http://www.planetofbirds.com/sedge-warbler-article-2

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