cntlaw

Captured 2012.12.23 by another bird watcher in Mai Po
The BFS blue ringed seem letters are no visible
The BFS red ringed seem to show some blockages of the other leg.
Need subject matter of expert to help to record them to the database.
Thanks.





[ Last edited by cntlaw at 3/01/2013 01:58 ]

Sze

cntlaw！再次謝謝你的分享！
這個情況估計是琵鷺右腳上的編號環及左腳上有一個顏色環脫落了所導致。
翻看琵鷺的環誌資料，有數隻琵鷺的左腳是會有2個藍色環的，包括：

1. K54（2006-07-20　在韓國於巢中被環誌）原本左腳顏色環，由上而下順序為：藍－紅－藍。2011年的觀察紀錄中未有特別提及右腳的編號環情況，估計應該仍是完好的。
2. K58（2006-08-16　在韓國於巢中被環誌）原本左腳顏色環，由上而下順序為：藍－黃－藍。2010-05-20被發現右腳的編號環脫落了。
3. K63（2007-06-17　在韓國於巢中被環誌）原本左腳顏色環，由上而下順序為：藍－綠－藍。被環誌後再沒有觀察紀錄。
4. K67（2007-06-17　在韓國於巢中被環誌）原本左腳顏色環，由上而下順序為：藍－白－藍。2009-11-28被發現右腳的編號環滑落至脫落跗蹠骨（tarsus）。（Reply #13: http://www.hkbws.org.hk/BBS/view ... amp;page=1#pid24990）
5. TX2（1997-12-22　在台灣被環誌）原本左腳顏色環，由上而下順序為：藍－白－藍。被環誌後再沒有觀察紀錄。

故此，估計最大機會會是K58，次有機會的是K67。不過由於我沒有再進一步的資料可以參考，所以我無法再作進一步推測。
或許，看看鳥會黑臉琵鷺研究組的專家們有沒有進一步的資料可以分享。

cntlaw

Quote:

Original posted by Sze at 2/01/2013 20:31
cntlaw！再次謝謝你的分享！
...

Hi Sze,

Thanks,it is clear now about the blue-ringed BFS.
I corrected a mistake in the photos links, please also help on the Red-ringed BFS which was being spotted at the same time by my friend.

HKBWS Johnson

Hi cntlaw! We've asked Dr Kisup Lee in S. Korea.

The blue-ringed BFS could be K58 or K67 since their coded bands have disappeared since 2009 and 2010 respectively.

We'll try to find more previous sightings to compare their faces. But as far as we know, both of them have thin yellow eye-line, making it quite difficult to distinguish.

Dr Lee said they've changed to stronger bands from K81, so far they works well and haven't dropped since then.

Hope it helps =]
Helen