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150325s2003 xx |||||o 00| ||eng c |
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|a (DE-627)JST083736492
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|a (JST)3672331
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Maul, Jonathan D.
|e verfasserin
|4 aut
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| 245 |
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|a Unusual Occurrence of Worm-Eating Warbler (Helmitheros vermivorus) in Intensive Agricultural Landscape in Northeastern Arkansas
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|c 2003
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|a Text
|b txt
|2 rdacontent
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|a Computermedien
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|2 rdamedia
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|a Online-Ressource
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|a The worm-eating warbler (Helmitheros vermivorus) is a ground-dwelling neotropical migrant that typically breeds within large sloping forest patches. On 7 July 2000 at 07:36 CDT, a female H. vermivorus was captured at an agricultural ditch in Poinsett County, Arkansas. The warbler was aged as after hatching year (ASY) and had a fully developed brood patch with complete feather loss. This occurrence was unusual because it was outside the reported breeding range for this species and the warbler was in a small (3.52 ha) forest patch in a flat landscape. Observations of worm-eating warblers in alluvial areas of Arkansas occur during the migratory period, but are relatively rare. The timing of this summer observation, presence of a brood patch, and lack of fat deposition in the furcular cavity indicated a recent breeding attempt; however, this does not preclude a dispersing individual. In either case, closer monitoring in lowland habitats during breeding and post-breeding periods might provide additional knowledge on the conservation status and habitat needs of this species. /// El gorjeador o cerrojillo (Helmitheros vermivorus) es un pájaro migrante neotropical que vive principalmente en el suelo y se reproduce típicamente en parches grandes de laderas boscosas. El 7 de julio del año 2000, a las 07:36 horas (CST) capturamos una hembra H. vermivorus en una acequia de riego en el condado de Poinsett, Arkansas. Se determinó que su edad era de un año después de la primera reproducción (ASY) y presentó un parche incubador completamente desarrollado con la pérdida completa de plumaje. Este evento fue singular porque se lo encontró fuera del área de aparemiento habitual de esta especie y el pájaro se ubicó en un parche pequeño (3.52 ha) de bosque plano. Se han observado a cerrojillos en áreas fluviales de Arkansas durante el período de migración, pero en muy pocas ocasiones. La época de esta observación veraniega, la presencia de un parche incubador, y la falta de depósitos grasos en la cavidad furcular indicaron un reciente intento reproductivo; sin embargo, esto no excluye la posibilidad de que se trate de un caso aislado. De todas maneras, observaciones más minuciosas en hábitats de tierras bajas durante el período reproductivo y post-reproductivo pueden proveer conocimiento adicional sobre el estado de conservación y las necesidades ambientales de esta especie.
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Zoology
|x Animals
|x Birds
|x Warblers
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Genetics
|x Molecular genetics
|x Breeding
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Botany
|x Plant ecology
|x Forest ecology
|x Forest ecosystems
|x Forest habitats
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| 650 |
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4 |
|a Biological sciences
|x Ecology
|x Animal ecology
|x Breeding sites
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| 650 |
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4 |
|a Biological sciences
|x Ecology
|x Wildlife ecology
|x Wildlife habitats
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| 650 |
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4 |
|a Biological sciences
|x Agriculture
|x Agricultural sciences
|x Animal science
|x Animal husbandry
|x Aviculture
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Conservation biology
|x Conservation agriculture
|x Habitat conservation
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| 650 |
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4 |
|a Biological sciences
|x Agriculture
|x Agricultural sciences
|x Agronomy
|x Crops
|x Field crops
|x Fiber crops
|x Cotton
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| 650 |
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4 |
|a Biological sciences
|x Agriculture
|x Farming
|x Farming systems
|x Intensive production
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| 650 |
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4 |
|a Physical sciences
|x Earth sciences
|x Geography
|x Geomorphology
|x Topography
|x Lowlands
|x Notes
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| 655 |
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4 |
|a research-article
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| 700 |
1 |
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|a Farris, Jerry L.
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The Southwestern Naturalist
|d Southwestern Association of Naturalist
|g 48(2003), 2, Seite 297-299
|w (DE-627)JST083713697
|x 19436262
|7 nnns
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| 773 |
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|g volume:48
|g year:2003
|g number:2
|g pages:297-299
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|u https://www.jstor.org/stable/3672331
|3 Volltext
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|a AR
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|d 48
|j 2003
|e 2
|h 297-299
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