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Documents disponibles écrits par cet auteur (20)
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Article
Jean-Paul Jacob, Auteur ; Marie-Charlotte Alvarez, Auteur ; Philippe Deflorenne, Auteur ; Mathieu Derume, Auteur ; Fabien Dormal, Auteur ; Rudi Dujardin, Auteur ; Elisabeth Godding, Auteur ; Claire Huyghebaert, Auteur ; Pierre Loly, AuteurIn 2018-2019, the water bird counts took place during another mild winter, with colder conditions limited to only a part of the month of January.The total number of native Anatidae in January was close to the average for the past decade. The Mal[...]
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Alain De Broyer, Auteur ; Jean-Paul Jacob, Auteur ; Rudi Dujardin, Auteur ; Sonja Lampertz, Auteur ; Vincent Leirens, Auteur ; Stef van Rijn, Auteur ; Paul Voskamp, Auteur ; Jean-Yves Paquet, AuteurL'aire et l'effectif nicheur du Milan royal et du Milan noir en Wallonie (Sud de la Belgique) ont été estimés au cours d'une enquête de terrain qui s'est déroulée en 2015 et en 2016, complétée par des suivis intensifs dans les principales zones [...]
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Marie-Charlotte Alvarez, Auteur ; Jean-Paul Jacob, AuteurEn 2017-2018, les dénombrements d’oiseaux d’eau ont eu lieu au cours d’un hiver très doux et pluvieux, avant un net refroidissement en février. Pour nombre d’espèces, les effectifs observés de novembre à janvier furent peu élevés, voire parmi le[...]
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Jean-Paul Jacob, AuteurDans Aves (53(1) 2016)The annual report for 2015 is dedicated to the nesting in Wallonia of some sixty uncommon species. The Great White Egret Casmerodius albus, the Mediterranean Gull Larus melanocephalus and the Pygmy Owl Glaucidium passerinum are now confirmed as [...]
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Jean-Paul Jacob, Auteur ; Marie-Charlotte Alvarez, AuteurDans Aves (53(1) 2016)This article summarizes the results of three winters' counts of water birds. The results generally confirm the long term trends previously described in the overview of 50 winters' counts (Jacob et al., 2013). There was a continuing decline in th[...]
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Jean-Paul Jacob, Auteur ; Anne Weiserbs, AuteurThe new atlas aims at evaluating to what extent changes occured since the first atlas of the Brussels avifauna was carried out ten years ago. Furthermore this new atlas takes place in the larger context of the regional atlases that will cover wh[...]
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Anne Weiserbs, Auteur ; Michel Janssens, Auteur ; Jean-Paul Jacob, AuteurSince 1998, the Alexandrine Paraqueet is regularly observed in the Brussels region. In 1999, 6 pairs have nested in two wooded areas in the north-western side of the region; 9 nesting pairs were counted in the year 2000 at the two same places. T[...]
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Antoine Derouaux, Auteur ; Hugues Dufourny, Auteur ; Jean-Paul Jacob, AuteurThis article presents the results of a study of 19 species carried out in the framework of a LIFE Project called "Reed Bed Bird Life in the Haine Valley" from 2002 to 2005. The birds involved were exhaustively censused in the various marshes stu[...]
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Jean-Paul Jacob, AuteurA seasonal report is from now dedicated to observations of less common species breeding in Wallonia. This report presents the breeding period of 2013 and 2014 for about seventy species. The regional avifauna has been enriched by a new breeding s[...]
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Jean-Yves Paquet, Auteur ; Jean-Paul Jacob, Auteur ; Thierry Kinet, Auteur ; Christian Vansteenwegen, AuteurSince 1990, common breeding bird populations in Wallonia (Southern Belgium) are surveyed annually by point count sampling. This scheme monitors evolution of an annual population index for about 80 species and reveals declines or increases of pop[...]
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Anne Weiserbs, Auteur ; Mario Ninanne, Auteur ; Jean-Paul Jacob, AuteurDans Aves (41(3-4) 2004)The House Martin was previously a common! species in the Brussels region. The first indication of a local decline dates back to the years 1978-1980. A drastic decrease of the breeding population during the eighties and early nineties lead the re[...]
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Jean-Paul Jacob, Auteur ; Jean-Yves Paquet, Auteur ; Koen Devos, Auteur ; Thierry Onkelinx, AuteurWaterbirds are censused every winter for 50 years in Wallonia and Brussels (Southern Belgium). This waterbird count is the oldest bird monitoring program in Belgium. In earlier time, it was limited to the mid-January count, but more recently, it[...]
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Amina Fellous, Auteur ; Riadh Moulai, Auteur ; Jean-Paul Jacob, AuteurDans Aves (42(3) 2005)Rose-ringed Parakeet was mentioned for the first time in Algiers in 1984 and breeds there since 1995 at least. It progressively widens its range through Algiers and its suburbs. Its installation is evidently favoured by numerous recent releases.[...]
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Emile Clotuche, Auteur ; Jean-Paul Jacob, Auteur ; Rene de Liedekerke, Auteur ; Francois Paulus, Auteur ; Pierre Loly, Auteur ; Jean-Yves Paquet, Auteur ; Didier Rabosee, Auteur
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Jean-Paul Jacob, Auteur ; Jean-Yves Paquet, Auteur ; Antoine Derouaux, AuteurDans Aves (43(3) 2006)The bird censuses from October 2005 to March 2006 were influenced by the mild autumn of 2005 followed by fairly cold weather with many ponds freezing by mid-January. The January census counted more than 125.000 water birds in the Walloon region [...]
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Antoine Derouaux, Auteur ; Pierre Loly, Auteur ; Jean-Yves Paquet, Auteur ; Sebastien Leunen, Auteur ; Jean-Paul Jacob, AuteurThe 2009-2010 winter was cold and snowy. It was notable for the number of ducks, geese and swans, which was above the ten-year average, and for below-average numbers of the other species. There were large numbers of Common Goldeneye Bucephala cl[...]
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Jean-Paul Jacob, Auteur ; Pierre Loly, Auteur ; Thierry Kinet, AuteurDans Aves (41(1-2) 2004)Winter censuses of waterbirds from 1998-99 to 2003-2004 in Wallonia and in the Brussels area were conducted during rather mild winters, with limited cold spells occurring notably early in 2003 (when arrivals of Wigeons, Mallards, Goosanders. Cor[...]
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Pierre Loly, Auteur ; Marie-Charlotte Alvarez, Auteur ; Jean-Paul Jacob, AuteurThe winter was cold with snow cover from the end of November till the end of December. Conditions then returned to normal, with open water surfaces thawed out by mid-January. During December, these peculiar conditions resulted in substantial dec[...]
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Jean-Paul Jacob, AuteurOn 12th april 1998, a male Black Woodpecker settles near a Great Spotted Woodpecker's nest and arouses an antagonistic behaviour of the latter. Each contact call of the Black Woodpecker is immediately followed by the drumming of the Great Spotte[...]
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Arnaud Beckers, Auteur ; Antoine Derouaux, Auteur ; Jean-Paul Jacob, AuteurIn 2013 the postbreeding passage of Honey Buzzards in Wallonia has reached a magnitude rarely seen before. While the passage usually occurs in the east of Wallonia, observers at sites across the region reported passages of hundreds of birds in j[...]
