Report of the month - June


History: The nature reserve "Schlammwiss" was founded in 1982 by the foundation"Hellef fir Natur" (HFN). Afterwards the group "Letzeburger Natur- a Vullenschutzliga" (LNVL) founded the station "Schlammwiss". The station is leaded by the "centrale ornithologique Luxembourg" (COL), a part of the asbl. Natur & Emwelt. Due to the fact that Luxembourg doesn't have its own bird ringing central, we work in cooperation with Royal Belgian Instutitute of Natural Sciences. Therefore, we use rings from the Belgian Museum of Natural Sciences.


Location: The bird ringing station "Schlammwiss" is located in Luxembourg, between the communities Schuttrange & Munsbach. The nature reserve is part of the 375ha big Syrvalley and is an extremely important Natura 2000 zone. The reserve is periodicly flooded due to the Syr river, which is an important generator of biodiversity.


Research area: Around 30ha are used for researche, on a length of 1km and a width of 30-120m. The main area is covered by reeds and wetlands (20ha). Furthermore, the resarch area is subdivided and caracterized by an orchard, a forest, several ponds distributed throughout the reedbed and a purification plant (SIAS). The main techniques employed are mist nets and rail traps in order to realize population estimates (i.e. breeding population, migration, overwintering population) and survival estimates by Capture-Mark-Recapture. There are several projects running in the nature reserve and visitation are possible.


Summary of the ringing activity this month

In June, the bird ringing station "Schlammwiss" caught about  983 birds of 43 species. This number is subdivided in 685 E, 226 W and 72 K. 1 bird foreign origin has been caught.


The total amount of birds for the month June is higher (+112) than the average amount of birds caught at the station from 2001-2018 and higher (+151) than the number of last year. The graphic below shows the average amount of birds for each month during the years 2001-2018 in comparison of the numbers of this years, 2018 and the working time for this and last year at the station Schlammwiss.



E:  first capture of this individual

W:  recapture of an individual which was already captured this year

K:  individuals which were ringed one or more years ago or individuals with a foreign country or station


Top 5

1. PARMAJ Great Tit 130
2. PARCAE Blue Tit


3. SYLATR Blackcap 105
4. ACRSCI Reed Warbler 77
5. ACOPAL Marsh Warbler 67

Interesting birds captured:

  • 12 Falco tinnunculus
  • 8 Athene noctua
  • 6 Tyto alba
  • 4 Hippolais polyglotta
  • 1 Ficedula hypoleuca


Distribution of the age:

Code Amount Definiton
C 9 older than four years
B 5 born four years ago
A 5 older than three years
9 10 born three years ago
8 6 older than two years
7 17 born two years ago
6 25 older than one year


born last year


age unkown, but not born this year
3 487 born this year
2 / age unknown
1 70 nestling

Distribution of nestlings - Code 1

Species Name Quantity  
    May June
Coloeus monedula  Western Jackdaw 1  
Parus caeruleus Blue Tit 10  
Parus major Great Tit 139 39
Passer domesticus House Sparrow 2  
Passer montanus Tree Sparrow 4  
Sitta europea Eurasian Nuthatch 8  
Athene noctua Little Owl  


Falco tinnunculus Common Kestrel   12
Passer montanus Eurasian Tree Sparrow   5
Tyto alba Western Barn Owl   6
Σ   167 70

Foreign birds that we controlled this year:

Month Species Country
January Cyanistes caeruleus France
February Parus major Belgium
March Turdus merula Belgium
  Troglodytes troglodytes Belgium
  Erithacus rubecula Sweden
April Parus major Belgium
  Sylvia atricapilla Belgium
  Sylvia atricapilla Spain
May Acrocephalus scirpaceus Spain
  Acrocephalus scirpaceus Belgium
  Acrocephalus scirpaceus Belgium
  Acrocephalus scirpaceus Belgium
  Acrocephalus scirpaceus Belgium
June Acrocephalus scirpaceus Belgium


The team of the bird ringing station Schlammwiss are mostly volunteers who did an excellent work this month!


 We say thank you for everyone who was helping this month!






In summary we spent around 104 hours during 22 days working at the station.



 We also welcome the visitors on our station:



All our sightings of this month are saved in


Compute total number of birds

Compute total number of observation

The weather information are offered by


Thank you!

Photos of this month

Some photographers sent us their photos which we included into our report.

All other photos are provided by Jim Schmitz.


Thank you for the photos!





Did you take any photos at the station, a visit or of any birds with a ring that could be from our station and want to publish those in the next report of the month?

Contact us!

Roland Miny

Extra story:


Grand-Duc Henri op Visitt am Naturschutzgebitt



New autobiographies of our team members:

Brutvogelmonitoring im Naturschutzgebiet „Schlammwiss-Brill“ 2018

Brutvogelmonitoring im Naturschutzgebiet „Schlammwiss-Brill“ 2018 --//-- Zwischenbericht des dreijährigen Pilotprojekts (2017-2019) --//-- (German)
Using a standardized transect survey, the complete breeding bird assemblage was analysed inside a 75-ha large wetland area in the eastern part of Luxembourg between Uebersyren and Mensdorf. The wetland area is classified as national nature reserve ´Schlammwiss-Brill´ and is designated SPA (´Special protected area´) of the European birds’ directive. By having conducted 24 site visits from April to July 2018, 2´589 single records of 78 different bird species were collected. The total breeding population added up to 441 breeding territories of 48 bird species, including typical species found in wetlands such as reed buntings Emberiza schoeniclus (36 territories), marsh warblers Acrocephalus palustris (21 territories), reed warblers Acrocephalus scirpaceus (32 territories), common nightingales Luscinia
megarhynchos (7 territories) und grasshopper warblers Locustella naevia (6 territories). Besides a large breeding stock of rather common species, one territory of the nationa
Brutvogelbericht2018 (1).pdf
Adobe Acrobat Dokument 3.1 MB



Thanks to the editiors of this report:

Charel Klein

Photos: Jim Schmitz,

Providing the data: Cédric Brodin:

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