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        Discussion Area °Q½×°Ï >> Birding Reports & Tips Æ[³¾³ø§i¤Î¤ß±o >>  Ô³¾¦ó®É¦^Âk¡H¡@When do Migrants return?
        
(Message started by: ³¾¤Í¢Ï(BWA) on Nov 6^th, 2004, 9:58pm)

Title: Ô³¾¦ó®É¦^Âk¡H¡@When do Migrants return?
Post by ³¾¤Í¢Ï(BWA) on Nov 6^th, 2004, 9:58pm

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¶g¤GÅ¥¤F¤@Ó¥Ñ^°ê³¾Ãþ¾Ç°òª÷·|¥Nªí¥DÁ¿ªºÁ¿®y¡A½Í¨ì¥LÌªº¤@¨Ç¬ã¨s¤u§@¡A¨Ò¦p³¥³¾Ác´Þ°O¿ý¡BÔ³¾¦^Âk°O¿ý¡Bªá¶é³¶³¾Æ[¹îµ¥¡A¸ê®Æªº¨Ó·½¥Dn¬O^°ê¦U¦a³¾¤Í´£¥æªºÆ[³¾¬ö¿ý¡C¸Ó·|ÁÙ±N¬ö¿ý¥H°Êµe¦a¹Ïªº¤è¦¡Åã¥Ü¡AÅý¤H¤@±æ«Kª¾Ô³¾¦^Âk^°ê¦U¦aªº±¡ªp¡A»á¬°¦³½ì¡A¥H¤U¬O¤µ¦~®a¿P¦^Âkªº¬ö¿ý¡G

http://blx1.bto.org/smw-dailyresults/results/anim-322-04.html

¡]«ö¦a¹Ï¤U¤èªº Play Áä±Ò°Ê¡^

When do Migrants return?

During a talk given by the British Trust for Ornithology last Tuesday, I learnt that they organize many studies based on records submitted by birdwatchers all over U.K. Examples include Breeding Bird Survey, Migration Watch and Garden BirdWatch. An idea that I find interesting is to present records of migrants in an animated map, which shows at a glance when the birds arrive and how are they distributed over the country. Here is an example on Bard Swallows:

http://blx1.bto.org/smw-dailyresults/results/anim-322-04.html

(Click the Play button below the map to start)