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本帖最後由 vandas 於 2012-7-21 02:30 PM 編輯
2隻腳也有環, 相信其中一個是追蹤儀吧
通常佢地寫D那隻鳥嘅資料唔會是追蹤儀,我以前都跟人做過 bird banding
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Sorry! 又不小心錯按了編輯
要向周哥哥請教: 放大睇最後一張圖, 左面的雛鳥兩腳都有環, 一個是金屬的; 另一個就是圖2那一種. 那麼你估計是甚麼? 為何要兩腳都戴? ...
vandas 發表於 2012-7-21 02:31 PM
有兩個環可能係有兩組唔同人加落去.
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Types of Bird Bands

There are several different types of bands used on different bird species. Bands can be metal or plastic, and the unique identification number of each band may be etched or engraved onto the band. Some bands are brightly colored so they can be read at a distance without disturbing the birds, and more detailed bands may have informational codes that identify where and when the bird was first banded. Some countries and banding organizations use bands that have the address of the relevant conservation organization right on the band.
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