Levering, H. P. & Keijl, G. O. How Many Aquatic Warblers Acrocephalus paludicola Stop Over in France during the Autumn Migration? Migration starts in autumn and sometimes earlier with some males leaving breeding areas at the end of June and the majority in the second half of July. Dutch Birding 12: 165-181.Brouwer, G.A. Ringing & Migration 24, 277-279.Neto, J.M., Encarnaçao V. & Fearon, P. (2010) Distribution, phenology and condition of Aquatic Warblers Acrocephalus paludicola migrating through Portugal.

In the UK it is best looked for in late summer, especially the latter half of August.

Brussels: European Commission.Jiguet, F. F. Chiron , O. Dehorter , H. Dugué , P. Provost , R. Musseau , G. Guyot , F. Latraube , P. Fontanilles , E. Séchet , J. Laignel , X. Gruwier & A. Sedge warbler According to Verheijen (1981) bad weather conditions determine the magnitude of death among migrating birds.
* This map is intended as a guide. While Aquatic Warbler superficially appears very similar to Sedge Warbler, there are a number of distinct differences, making the former relatively distinctive with good views. Mainly passerines suffer from man-made light sources such as TV-towers and lighthouses during autumn migration, when their navigation becomes confused by the light source and so they collide with buildings.


Two foreign birds were recovered in the Netherlands: a bird from Belarus was re-trapped and a colour-ringed adult from Poland was seen in the field (Appendix 1). Of more interest is that there are hardly any re-traps on Dutch ringing sites of locally ringed birds. Sign up for the latest news and updates Subscribe. This suggests that the Netherlands is not of significant importance for stop-overs for this species. The datasets of museum specimens, ringed birds and the field sightings have very different backgrounds, so any comparison needs to be done with care. With the help of over 7,000 of the world’s best wildlife filmmakers and photographers, conservationists and scientists, Arkive.org featured multi-media fact-files for more than 16,000 endangered species.

These birds are all believed to be migrants (and not former breeding birds). In autumn, the first birds are usually trapped at the end of July or the beginning of August. 16, 61–66Vergeichik, L. & Kozulin, A. VRS Castricum, Castricum. We however found some striking differences between ‘older’ (up till 1971) and ‘newer’ (1978-2014) data. Aquatic Warbler Acrocephalus paludicola. Intense lights can be an attractive force for nocturnal migrants, especially during nights with a very low cloud ceiling, fog, drizzle or rain and a lack of moonlight. Ardea 69 (2) : 199 - 203.Temminck, C.J. Zeldzame vogels van Nederland. There’s a second peak in the second decade of September, after which the numbers quickly drop again.

The vast majority of the birds in the Naturalis collection are lighthouse (or lightship) victims (n=205), collected between 1887 and 1971, but mostly until 1958 (n=191). Wildscreen is a registered charity in England and Wales no.299450 | Wildscreen USA is a registered 501(c)(3) non-profit organisation in the USA The bird from 27 July 1930, an adult collected at Schiermonnikoog, Friesland is the only one collected during this month. Three apparent changes influence the mean dates. Keepers of the Dutch lighthouse at Goeree, Zuid-Holland found out that the risk is highest during nights around dark moon and lowest in nights with a full moon (Brouwer 1929). Its dependence on a specialised and vulnerable breeding habitat means it has become a globally threatened and declining species. After the second decade of September Aquatic Warblers become rare. However, please note that the vast majority of the ringing sites in Holland is not in prime habitat for the species. 3 more birds. ou Tableau systématique des oiseaux qui se trouvent en Europe : précédé d'une analyse du système général d'ornithologie, et suivi d'une table alphabétique des espèces18 October 2014, Meijendel, Wassenaar, the Netherlands Not a single bird was collected during spring. With the exception of 1980 birds have been trapped every year since 1961 (Appendix 1). UK breeding is the number of pairs breeding annually. Therefore, the charity had been using its reserves to keep the project online and was unable to fund any dedicated staff to maintain Arkive, let alone future-proof it, for over half a decade. Sovon nieuws 19: 3-4.de By, R. A. One remarkable night deserves to be mentioned: on 13 August 1912 a staggering 29 Aquatic Warblers were collected at the lighthouse at Haamstede, Zeeland (Figure 4). For ringed birds the low number of adults was already mentioned in other publications with smaller data sets (de By 1990; van Eerde 1998; Levering & Keijl 2008). In Portugal adults and first calendar-year birds are even equally common: 51 % of the birds in Neto et al (2010) were adults. The aquatic warbler is a regular but scarce autumn migrant to certain areas in southern Britain, visiting on its way between breeding grounds in eastern Europe and its winter home in West Africa. It suggests that adults and first calender-year birds have a different migration strategy, most probably by taking another, more easterly route, or maybe by making less, shorter or different stop-overs The relatively few foreign ringing recoveries yield no surprises: they’re either from known breeding areas east of the Netherlands, or along known migration routes in the south. Aquatic Warbler, first calendar-year, Kwade Hoek, Zuid-Holland, the Netherlands, 16 Augustus 2014.Figure 3. The aquatic warbler is the only globally threatened passerine bird in mainland Europe. The Aquatic Warbler is threatened with extinction, both in the UK, and across Europe, due to their low population and also due to their habitat being lost because of human destruction.


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