Consultez les articles du Bulletin Aves !
Aves, 44/1 | 2007 | 13-25
A Case of Adaptation of the Sand Martin (Riparia riparia). A colony nests in a tower of the castle at La Roche-en-Ardenne.
Following the discovery of a new colony of Sand Martins (Riparia riparia) in one of the towers of the castle at La Roche-en-Ardenne, in the Ourthe valley, the author wondered about the presence of many colonies described as "very artificial" along this river, whereas virtually no other durable cases are known on other Walloon rivers, outside the lower Ambleve, draining into the Ourthe, and the Liege Meuse into which the Ourthe flows. The phenomenon is perhaps related to the systematic destruction of the natural banks of these rivers, already extremely exposed to spring floods. Thus, the Ourthe is the only Walloon river with a net decline in its natural population of Martins during the last thirty years. The increase in artificial nesting colonies is perhaps also due to the hereditary character of this means of reproduction and to the advantages that it offers. Nests in the walls are protected from risks of flooding and predation. Ringing the birds born or nesting in such locations has allowed us to see that the colonies continue to function in a network, in the same way as colonies of nesting birds on natural banks or those in sand pits.
Articles on the same species
Hirondelle de rivage Consultez la fiche de l'espèce
Climate change: synthesis and impacts on Walloon avifauna ()
Laudelout A. & Paquet J.-Y. - Aves, 51/4 | 2014
Bird fleas (Siphonaptera) in Belgium : inventory and hosts ()
Libois R. - Aves, 51/4 | 2014
Analysis of the probable causes of recent changes in birds of Wallonia ()
Jean-Paul Ledant - Aves, 51/1 | 2014
Birdlife of the Marche-en-Famenne military camp : 1981-2007 ()
Van Der Elst, D., & Vieuxtemps, D. - Aves, 44/4 | 2007
- Aves, 39/3-4 | 2002
Articles published in the same bulletin
In memoriam : Paul Géroudet (1917-2006)
Ornithological good practice (Paul Géroudet, 1965)
Ethical guidelines for the field ornithologist
We received (Bibliography)
Return of nesting Glossy Ibis Plegadis falcinellus in Algery
Belhadj, Gh., Ghalabi, B., Chabi, Y., Kaiser, Y. & Gauthier-Clerc, M.
Observations from March to May 2006
Centrale Ornithologique Aves, Groupe de travail "Chroniques"
Spring 2006 at the ringing station of Les Awirs
Fraipont, R., Vandewer, A., Rouck, M. & Burnee, A.
Range expansion of Citril Finches (Carduelis citrinella) in Southern Spain
Förschler, M.I. & Kläger, J.
The presence of Waxwings during the winter 2005-2006 in the French speaking part of Belgium
Nesting of the Cormorant (Phalacrocorax carbo sinensis) on cliffs.