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En muchas especies es imposible distinguir visualmente los sexos, si bien en algunas de ellas, machos y hembras muestran pequeñas, pero cuantificables, diferencias biométricas que pueden usarse para discriminarlos. Este es el caso del... more
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      StatisticsApplied StatisticsBiometricsBirds (Ecology)
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      OrnithologyBirdsOrnitologiaBird Ringing
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      Migration StudiesBird (Ornithology)Bird phenologyBird Ringing
A survey of nocturnal migrant birds at Dalton Pass, Nueva Vizcaya Province, Luzon, was mounted during October 2009–January 2010 as part of surveys for the Streaked Reed Warbler (Acrocephalus sorghophilus), conducted under joint agreement... more
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    •   4  
      PhilippinesThreatened Species ConservationBirdsBird Ringing
Muda datado y sexado Sylvia atricapilla
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    •   3  
      Bird bandingBirdsBird Ringing
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      EcomorphologyBird MigrationPartial MigrationBody Mass
Ramos Melo J.J. & Ramirez, J. (2015). Anillamiento, datado y estatus en Canarias de la tórtola senegalesa. Revista de Anillamiento, n. 34.Otoño 2015: 25 – 31.
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    •   4  
      OrnithologyBirdsCanary IslandsBird Ringing
Muda datado y sexado Hirundo rustica
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      Bird bandingBirdsMoultBird Ringing
Sexes cannot be distinguished with certainty by human observers in many avian species. However, some apparently monomorphic species have small but measurable sexual dimorphisms in biometry, which can be used to determine sex. Here, we... more
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    •   12  
      OrnithologyMultivariate StatisticsResearch Methods and MethodologyMorphometrics
A week long study was carried out at the private reserve of Don Luis in Cambyreta in June 2014 which is the winter in Argentina. The initial object was to confirm which avian species habitate two of the island woods at the reserve by... more
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    •   3  
      Birds (Ecology)Bird RingingBird ringing South America
The Iberian Chiffchaff Phylloscopus ibericus has recently been accepted as a full species, but is still very difficult to distinguish from the Common Chiffchaff P. collybita when molecular and acoustic evidence is lacking. Distinguishing... more
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    •   14  
      OrnithologyMorphometricsBiometricsMorphology
Zjazdowe wystąpienia dotyczyły prowadzonych i planowanych badań oraz ochrony gatunku. Omówiono różne rodzaje usług ekosystemów związanych z bocianem białym, podkreślając znaczenie usług kulturowych. W celu określenia różnic wykazywalności... more
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      EcologySexing/ageing BirdsCiconia ciconiaBird Ringing
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    •   6  
      OrnithologyBirdsOrnitologiaBird Ringing
Muda datado y sexado Parus major
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    •   4  
      Bird bandingBirdsMoultBird Ringing
Species composition and origin of ringed gulls Laridae observed in the vicinity of Konin. // Abstract. In 2001-2004, observations of gulls on rubbish dumps near Konin were carried out. The aim of our work was to analyse ring recoveries... more
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      Invasive SpeciesBirdsBird RingingGulls
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      ZoologyGeographyMigrationWest Africa
Estimates of bird numbers through quantification of density and range sizes are necessary for decisions regarding conservation status, yet counts of birds are often confounded by uncertainty of detection. The status of the endemic birds... more
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      OrnithologyDetectabilityEndemic speciesPopulation estimation
RAMOS MELO, J.J., P. GONZÁLEZ DEL CAMPO, J. RAMIREZ & A. DELGADO (2013). Resultados del estudio de la migración de las aves de la región de Souss-Massa. Servicio de análisis de la migración de las aves a Canarias y otras zonas a través... more
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    •   7  
      Climate ChangeMoroccoCambio climáticoOrnitology
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      OrnithologyBirdsOrnitologíaBird Ringing
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      TurkeyBird RingingCernek ringing station
We analysed the variation in the abundance of captures of wintering passerines in the roost of San Juan lake (Madrid, Spain), for the period 1994-2014. Estudiamos la variación en la abundancia de capturas de paseriformes en el dormidero... more
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      Bird ConservationBird Ringing
Background: The long-term monitoring of demographic changes in waterbird populations remains limited, but such information can be valuable for conservationists and waterbird managers. Biased sex ratios can indicate differences in survival... more
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      DemographyOrnithologyConservation BiologyWildlife Biology
Identifying temporal and spatial patterns in demography are critical to understanding long-term fluctuations in population size. Common Eider Somateria mollissima numbers have shown a long-term decline, resulting in the species being... more
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      DemographyOrnithologyConservation BiologyWildlife Biology
This paper is a detailed description of the life histories of four colour-ringed Egyptian Geese Alopochen aegyptiacus: the male white F / yellow N (WFYN, photo 1) and his three partners. WFYN was ringed as an adult (after 2CY) on 8 June... more
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      OrnithologyAnimal EcologyBird (Ornithology)Birds
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      Bird CensusAvian InfluenzaBird MigrationBird Ringing
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    •   4  
      EcologySexing/ageing BirdsCiconia ciconiaBird Ringing
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    •   4  
      AfricaWest AfricaBirdsBird Ringing
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      ZoologyGeographyMigrationWest Africa
Analyses of 2280 re-encounters made during 2014–20 of 300 adult British Greylag Geese Anser anser marked at Windermere, Cumbria, in summers 2013–16 are used to describe the patterns of their moult migration. Results show that birds... more
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      DemographyConservation BiologyMovement EcologyWildlife Biology
Presentamos las memorias de las actividades y proyectos realizados por el Grupo ornitológico Zamalla durante 2019.
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      Conservation BiologyBird (Ornithology)Manejo De Recursos NaturalesAves
Muda datado sexado Carduelis chloris
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      Bird bandingBirdsMoultBird Ringing
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      Bird RingingAtlassing
Awad S., Rz1d I., Busse P. 2013. The ringing site in Jericho (Palestine) – development of bird migration and parasitological research on the Great Rift Valley flyway. Ring 35: 55-63. A new research project near Jericho in the Jordan... more
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      Bird MigrationMigration patterns of social network usersBird Ringing
Capsule. The first confirmed record of breeding by a one-year-old Common Tern Sterna hirundo is revealed by ringing evidence, despite second-summer plumage characteristics.
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      DemographyLife historyLife History EvolutionSeabirds