Rob Halff
 ·  5 December 2011  21:55

Fraaie plaat Max! ;)

Max Berlijn
 ·  5 December 2011  22:25

Een goede fotograaf zal ik nooit worden, er kwam een buitje over..

Max Berlijn
 ·  15 March 2012  16:46, gewijzigd 15 March 2012  16:47

Niet zo heel goed nieuws over zijn "neefje" de Bears Pochard via Gerard S.: Op het BirdLife forum waar jij ooit een posting deed over Baer’s Pochard zag ik zojuist deze reactie van ongeveer een maand geleden die de ernst van de situatie bevestigt: Wang Xin, Cao Lei, Lei Jinyu, Tony Fox says: February 12, 2012 at 1:31 pm Based on recent compilation and collation of counts and observations from a wide array of available information, we are deeply concerned to find a drastic decline in wintering numbers and range contraction of Baer’s Pochard. The results of the exercise have been gathered in a database and analyses have been prepared for formal reporting, but given the urgency of the situation, we feel the very pressing need to report preliminary findings here. Because of lack of consistent and regular counts from many wintering sites, it is difficult to present count data in any logical way that provides a clear indication of true population trajectory. However, it is our impression from counts and speaking directly to national experts that the species has now functionally ceased to winter in regular numbers at any site outside of mainland China as of winter 2010/11. Within China, the sum of maximum annual winter counts (November to March) from each province fell from 16,792 during 1987-1993 to 2,131 in 2002-2011. There was a marked contraction of range within China over this period, with no records from many provinces in recent years, despite increases in birdwatching activity. Clearly using maximum counts over a series of years likely over-estimates the true numbers actually present in any one year, but the relative values indicate the magnitude of the decline and the geographical contraction in range which is very evident throughout the winter quarters. The Chinese State Forest Agency and WWF-China recently coordinated coverage of winter resorts in the middle and lower Yangtze River Floodplain (now considered the core wintering area for the species) but found less than 200 Baer’s Pochard in January 2011. Perhaps far worse, a special survey by Wuhan Birdwatching Society this winter (2011/12) did not find any Baer’s Pochard at all, even at Liangzi Lake (where the survey had found c. 130 individuals last year). Birdwatchers have also been to the upper part of Wuchang Lake in Anhui this winter where Cao Lei’s group have been finding more than 200 in recent years and found none there as well. In the Baiquan wetlands, in Wuhan, where the species was often found in the past, there are only reports of poisoned swans and geese because the water levels in winter 2011/12 are so low and people can get near to the waterbirds as never before. Based on improved counts from very recent years, we fear that the global population of the species is now less than 1000 individuals and are deeply concerned that the true world total could be very much lower than this. Since we find very little information about current breeding and staging areas, there is an immediate need to better understand the breeding distribution and biology of Baer’s Pochard. Given the widespread and rapid decline, it seems unlikely that factors on all the non-breeding areas have simultaneously contributed to its demise alone, although we cannot rule out the effects very heavy mortality at a key staging site (such as hunting) where a large proportion of the population passes each year. Nevertheless, there is an urgent need to determine the food supply and conditions for the species on the last few remaining lakes used on the winter quarters to secure their sympathetic management in winter, if it is not already too late. There is no denying the very urgent need for rapid and coordinated actions to protect the Baer’s Pochard throughout its remaining range and recommend suitable re-grading of its current status as soon as possible. Zie ook de meldingen op observado: http://observado.org/soort/view/70509?from=01-01-1900&to=2012-03-15&prov=0&maand=0&rows=20&os=0

Max Berlijn
 ·  12 January 2017  23:50, gewijzigd 12 January 2017  23:51

Deze 2 Witoogeenden http://waarneming.nl/waarneming/view/133583818 werden voor het eerst gezien op de Hochterbampt (B) op 28-03-2012 en bevinden zich in de winter en het voorjaar op plekken in en rond dit gebied op de grens van NL en B. Ze zijn ongeringd voor zover we hebben kunnen zien. Het is een paartje en volgens voor ons onbevestigde verhalen hebben ze een of meerdere broedpogingen in de Hochterbampt ondernomen. Herkomst?? maar vooralsnog gewoon wild.

Max Berlijn
 ·  13 November 2017  08:40, gewijzigd 13 November 2017  11:04

We wisten dit al wel de afgelopen paar winters maar het checken van poten van Witoogeenden op het hebben van ringen is geen overbodige luxe meer. De herintroductie vogels komen dus mee met Tafeleenden die hier de winter doorbrengen. Op zich lijkt er niet zo veel mis met dit project (contra Lee zijn posting), maar voor de puristen onder ons is een ongeringde toch leuker en daar kregen we er gelukkig nog jaarlijks genoeg van.. Edit: Die projectringen zijn gelukkig goed zichtbaar

Max Berlijn
 ·  8 February 2019  16:12

3 ongeringde vogels, soms, bij elkaar toch erg leuk voor NL.