| Vorige | Terug | Volgende |
| Naam: | Lachstern / Gelochelidon nilotica |
| Plaats: | Oudesluis |
| Datum: | 11 augustus 2011 |
| Fotograaf: | |
| Toegevoegd: | 11 augustus 2011 |
| Determinatie: | Zeker |
| Hits: | 10389 |
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| Eindelijk weer eens een foto van een juveniel! |
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| Nice to see that some or at least one juvenile Gull-billed Tern arrived in your area and the roost at the Balgzand hosted now more than 30 birds again. In the colony at Neufelderkoog (Germany, Schleswig-Holstein, north side at the mouth of river Elbe) between 1500-2000 pairs of Common Terns this year 42 pairs of Gullbilled Terns were breeding (and one single pair in Denmark (westend of Limfjord). One adult in our colony was colourringed (yellow over blue on the left, red over white on the right), ringed as one of only very few chicks in 2007. This year we started a species protection project with care of the colony by wardens all around the clock including information of visitors, carry out observations, fencing against foxes and actions to displace them at night etc. pp. The breeding success was a little bit better than all the 10 years before (we assume 2010 for instance only one bird fledged), but unfortunately relatively poor again (losses by predators like fox in the beginning of the season, ermine, Marsh Harrier, Peregrine Falcon etc., often bad weather conditions and human disturbance, especially systematical by one stupid man going into the colony four times for 20-30 minutes and also at bad weather in the darkness …; no flooding of clutches this year because the colony was situated in the salt marsh 1,2 m above mean high tide, but possibly losses of some chicks; food availability with earthworms, Chinese mitten crabs, frogs and mouses seems to be ok for the few chicks). We think that at most 10 young birds (some of them ringed, but only with metal rings) started to the Netherlands since the last days of July. We suppose on 10th of August the last birds abandoned the colony. We hope to have a better season next year and will do our best again. Bernd Hälterlein |
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| Hello Bernd, Thank you for having responded to my request for your report to post here for other interested parties. Regards, Fred |
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| Hello Bernd, Keep up the good work! We like to see as many Gull-billed Terns as possible in Holland. All the best, Gijsbert |
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| Von: Günther Klaus [mailto:k.guenther@schutzstation-wattenmeer.de] Gesendet: Freitag, 20. Juli 2012 14:51 An: CR-birding Infos Betreff: Colour-ringed Gull-billed Terns from the German Wadden Sea of Schleswig-Holstein Dear friends, for the second year in 2012 an "endangered species protection project" for the Gull-billed Tern was financed by the Ministery of Schleswig-Holstein, Germany, to protect the last remaining Gull-billed Terns in northwestern Europe and its only colony with ca. 38 breeding pairs in the southernmost saltmarshes at the Elbe river-mouth in the Wadden Sea Nationalpark of Schleswig-Holstein, Germany. The project was conducted by Bündnis für Naturschutz Dithmarschen, Nationalparkverwaltung SH Wattenmeer, University Hamburg, GFN and Schutzstation Wattenmeer (see also birdmagazin "Falke", 7 / 2012). From the 38 breeding pairs more than 40 chicks grew up and 30 chicks were individually colour-ringed! Up to know we do not really know the number of fledged individuals, but we optimistically assume or hope, that 15-20 birds survived the bad weather periods and will be able to fly now already or will do so soon! Fledged young and their parents leave the colony-area quickly and will hopefully show up as familiy-groups at other places in the Wadden Sea or on their migration further south to western Africa in the coming weeks or months !? So, please, look out not only for the many cr-SandwichTern chicks but also for the very beautyful and rare cr-Gull-billed Tern chicks and report sightings to me (k.guenther (at) schutzstation-wattenmeer.de). Also counts of Gull-billed Tern at roosting-sites (number of adults / number of juveniles) or any sightings are very important for us, to better be able to evaluate the breeding success of the 2012 season. Good luck and looking forward to your reports, many greetings, Klaus Günther and the "Gull-billed Tern protection-team" PS: Colourring-scheme for Gull-billed Terns (see also www.cr-birding.com or www.cr-birding.be) Combination of 5 rings (4 colour-rings, 1 metal-ring). note 1: left tibia: metal ring; left tarsus: two colour rings; right tibia: no ring; right tarsus: two colour rings. note 2: 6 different colours were used: blue, green, red, orange, yellow, white. |
