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Title: Common Koel ¾¸ÃY chicks Post by Koel_Ko on May 2nd, 2003, 1:58pm 208 Common Koel ¾¸ÃY Homantin ¦ó¤å¥Ð 29/4/2003 Some pics of a foster parent and the Koel chicks reared. http://us.f1.yahoofs.com/users/a5e9dc4a/bc/__hr_koel2.jpg?bcaugs.A6.lj090Q http://www.hkbws.org.hk/fileServer/PhotoG/koel_ko/koelkokoel01.JPG http://us.f1.yahoofs.com/users/a5e9dc4a/bc/__hr_Koel.jpg?bcaugs.Awiw79MI. http://www.hkbws.org.hk/fileServer/PhotoG/koel_ko/koelkokoel02.JPG http://us.f1.yahoofs.com/users/a5e9dc4a/bc/__hr_koel3.jpg?bcaugs.AtmGdULH4 http://www.hkbws.org.hk/fileServer/PhotoG/koel_ko/koelkokoel03.JPG |
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Title: Re: Koel chicks Post by Samson So on May 2nd, 2003, 2:12pm Hi all, This is an interesting and useful record! I have also seen Koel with foster parents such as Black-necked Starling, Crested Myna and Blue Magpie. Does anyone see some other foster parents for the Koel? Samson |
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Title: Re: Koel chicks Post by Forrest FONG on May 2nd, 2003, 9:04pm Hi Koel_ko, :-/ The photos you stored at http://us.f1.yahoofs.com/users/a5e9dc4a/bc/__hr_Koel.jpg?bcaugs.Awiw79MI. could not be accessed by all means. >:( Can you send your photos to me direct for proper displaying at the BBS, please. Please also note the advice in my previous messages: http://www.hkbws.org.hk/cgi-bin/yabb/YaBB.pl?board=BirdingTips;action=display;num=1049548002 Regards Forrest :( |
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Title: Re: Koel chicks Post by Koel_Ko on May 3rd, 2003, 8:01pm Dear Mr. Fong, My apologies again for troubling you - could you please specify the direct method for sending the photos to you, ie. by email or via other means? I have tried the picturetrail account nad had no luck in posting my photos, so I had to revert to using the yahoo photos account, which, with the links I had specified, in fact showed the photos on my immediate posting, so that I failed to notice the failure. Sorry again for the treament of the photos :-[ |
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Title: Re: Koel chicks Post by Forrest FONG on May 3rd, 2003, 11:29pm Hi Koel_ko, You can send the photos to my email please. You can find my email address by just clicking the "envelope" icon on the left. Please keep using your picturetrail account instead of yahoo to store your photo. Regards Forrest |
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Title: The photos can be seen now! Post by Forrest FONG on May 8th, 2003, 9:41pm :) |
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Title: Re: Koel ¾¸ÃY chicks Post by ³¾¤Í¢Ï on May 8th, 2003, 10:36pm «¢¡IÁÙ¥H¬°³ßÄN¬O³¾Ãþ¤¤¤ñ¸ûÁo©úªº¡Aì¨Ó¨e̤]·|¨üÄF¡C :-/ |
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Title: Re: Koel ¾¸ÃY chicks Post by xyz_ps on May 10th, 2003, 7:00am ³¾,¥i¯à¤]·|¦³·O´d¤§¤ß©O? ??? ·íµo²{¾i¤F«Ü¤[ªº³¾bb¤£¬O¤v©Ò¥X,¤]¤£·|¤£Ä~Äò¾i¤U¥h§a? ;) |
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Title: Re: Koel ¾¸ÃY chicks Post by ³¾¤Í¢Ï on May 10th, 2003, 4:54pm ÷¨|ö½³¾¬O¤j³¡¥÷³¾Ãþªº¥»¯à¡A¥ÎÀÀ¤Hªk¨Ó¬Ý¥i¥H»¡¬O·R¤ß©Î¥À©Ê¡C ¿Ë³¾¿ë»{¥®³¾ªº¯à¤O¦³¡A¥uª¾§V¤O³Þ÷¡A¥¼¯àµo²{±_¤¤¥®³¾³ºµM¨Ã«D¦Û¤v©Ò¥X¡A¦Ó¥B¬O¿Ñ±þ¿Ë¥Í°©¦×ªºªº¥û¤â¡C ¦pªG¾¸ÃYªº±H¥D¦³¤HÃþªº´¼¼z©M·P±¡ªº¸Ü¡A·í¨e̵o²{³o¥i©Èªº²{¹ê«á·|«ç»ò¤ÏÀ³©O¡H ¾¸ÃY³oÃþ±H¥Í©Ê³¶³¾§Q¥Î¤F±H¥Dªº®zÂI·l¤H§Q¤v¡A¬Ù¥h¨|ö½ªº¤u§@¡A¥Î¤HÃþªº¼Ð·Ç¨ÓÁ¿¬O«D±`ªº¯Ê¼w¡A¦ý¬O³o¥¿¬O¾¸ÃYªº¤Ñ©Ê¡A´N¦p±H¥Í¦b¤HÅ骺±H¥ÍÂΩÎSARS¯f¬r¤@¼Ë¡A¬O¦ÛµM²{¶H¡AµL©Ò¿×¹D¼w¤£¹D¼w¡C¡]·íµM¡A¤H»P¤H¤§¶¡¬Û³B´N¤@©wnÁ¿¹D¼w¡C¡^ ¨¬°¤HÃþ¡A§Ú̳£´Á±æ´c¦³´c³ø¡A³o¦b¦ÛµM¬É¤¤¤]¦³µo¥Í¡G¦³¨Ç¡§¤ñ¸ûÁo©ú¡¨ªº³¶³¾¯à°÷§â¦Û¤v¤Uªº³J©M¡§«_µP³f¡¨¤À¿ë¥X¨Ó¡C¤@¥¹µo²{±_¤¤¦³²§¡A¨eÌ·|±ó±_±qÀY¦A¨Ó¡A©ÎªÌ°®¯Ü§â°²³J¤@¸}½ð¥X±_¥~¡C (¦³Ãö§ùÃY©M±H¥Dªº°«ª§¥i°Ñ¦ÒThe Life of Birdsºô¯¸ http://www.pbs.org/lifeofbirds/home/index.html ¤¤ªº"Parenthood"¤@¶) :) |
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Title: Re: Koel ¾¸ÃY chicks Post by xyz_ps on May 11th, 2003, 4:14pm ¦³³¥¾Ç~!!! ;D |
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Title: Re: Koel ¾¸ÃY chicks Post by °²³¾°g on May 11th, 2003, 10:00pm ³o¬O±_±H¥Íª«»P±H¥D¶¡ªºÄvÁÉ¡C ¦b³¾Ãþ¡A³½Ãþ©M©øÂΤ¤³£¦³¤@¨Ç¦Û¤v¤£¿v±_¡B¤£¨|¥®¡A¦Ó¬O§â¨e̪º§Z²£¦b¨ä¥LºØÃþªº±_¤¤¡A¦pKoel Ko©Ò±N±i¶Kªº¾¸ÃY¡A¬O±_±H¥Íª« (brood parasitism)¡C §ùÃY¬ì³¾Ãþ¬O¼sªx³Q»{ª¾ªº±_±H¥Íª«¡A°O±o¦b¡u«OÅ@ÜñìÀã¦a¹B°Ê¡v¤¤¡AÃa³J 1 ¸¹´¿¦bÜñì©ç±o¤@±_¶Â»âÙʳ¾©MÂú³¾¡A¹Ïªº¥k¤U¨¤¡u¬ð¡v¤F¤@Ӷ¦⪺ÀY¥X¨Ó¡Aì¨Ó¬O¤@°¦¾¸ÃYªºÂú³¾¡C ¦³¦~ªø¤@½úªºÆ[³¾¤H»¡¡A®L¤Ñ¥«°Ï±`Å¥¨£¾¸ÃYªºì¦]¡A¥i¯à¬O¦]¬°¨ȩä´M¨ä¥L³¾¤×¨ä¬OÙʳ¾ªº±_¡A¦ÓÙʳ¾¼sªx¤À§G©ó«°¥«¤º¡CÁöµM³o¤@ÂI¥¼³QÃÒ¹ê¡A¤£¹L±q¥H¤W¥i²¤ª¾¤@¤G¡C ±_±H¥Íª«»P¨ä±H¥D¡A¥i¥H¶i¤ÆÄvÁɨӲz¸Ñ¡A³o¬O«ü¨ä¤¤¤@¤è¨ü¯q¡]±_±H¥ÍªÌ¡^¦Ó¥t¤@¤è¡]±H¥D¡^¨ü·l¡C¦b³¾Ãþ¤¤¡A±_±H¥ÍªÌ¨ã¦³¦h¼Ëªº¾AÀ³¡A¥H«K´£°ª¨ȩQ¥Î±H¥Dªº®Ä²v¡A³o¨Ç¾AÀ³¥]¬A¼ÒÀÀ±H¥Dªº§Z©ÎÂú³¾¡B±þ¦º±H¥DªºÂú³¾©M§â±H¥Dªº§Z±q³¾±_¤¤±ÆÀ½¥X¥hµ¥¡C ³¾¤Í A ´£¨ÑLife of Birdsªº»¡©ú¡A¨ä¤¤´£¤Î¤û³¾(crowbird)¡A³o¬O¤@ӫܦ³½ìªº¨Ò¤l¥h¸ÑÄÀ¤WzÆ[¹î¤û³¾¬O¤À§G©ó¥_¬ü¬wªº¤@ºØ±_±H¥Í³¾Ãþ¡A¾Ú°O¸ü´¿¦b200¦hºØ¤£ªº±H¥D³¾Ãþ¤¤²£¹L§Z¡A¨ä¤¤¦³100¦hºØ´¿¦¨¥\¦a¾i¨|¡C´¿¦³¾ÇªÌ(Robthstein)¹ï´ÄÀY¤û³¾(Molothrus ater)§@¼sªx¬ã¨s¡C¤p§Ì¸`¿ý¨ä¤¤ªº²Ó¸`¡A»P¤j®a¤@°_¤À¨É¡G ¥Ñ©ó¤û³¾ªº±H¥Í¡A±H¥D¦Ü¤Ön·l¥¢¤@ªT§Z¡A¨Ã±N«Ü¦h®É¶¡©M¯à¶q¥Î©ó¾i¨|¤û³¾ªº¤@°¦Âú³¾¡A¦Ó¦Û¤v¦b¿ò¶Ç¤W¤@µL©ÒÀò¡CÁöµM¥i¯à±H¥D¾i¨|¤û³¾¦P®É¤]¾i¨|¦Û¤vªºÂú³¾¡A¦ý¤û³¾ªº§Z±`±`¤ñ±H¥Dªº§Z§ó¦¦a¹å¤Æ¥X¡A¦b³oºØ±¡ªp¤U¡A±H¥D¬°¤FÁý¾i¤û³¾¦Ó·|©ñ±ó¨e̦ۤvªº§Z¡C³o´N¬OÄvª§¡A·|¾ÉP¥t¤@¤è¥¢±Ñ©M¦³©Ò·l¥¢¡C ¦³¨Ç±H¥D·|§¹¥þ±µ¨ü±_±Hª«ºØªº§Z¡A¦Ó¦³¨Ç«h§¹¥þ©Úµ´¡C¦³¸ÑÄÀ¬O³oµø¥G³¾Ãþ¦³§_ÃѧO¥~¨Ó§Zªº¯à¤O¡AµM¦Ó¡A©Úµ´¦æ¬°ÅãµM¬O¤@ºØ¾AÀ³¡C ±H¥D³¾Ãþ¬°¬Æ»ò·|¡u±µ¯Ç¡v©M¡u©Úµ´¡v¡ARobthstein´¿´£¥X¹L´XºØ°²³]¡G °²³](1) - ±H¥Í·l¥¢¡G¡u©Úµ´¡vª«ºØ¤@©w¬O¨º¨Ç¦b¦ÛµM¬É¾D¨ì³ÌÄY«ªº±H¥Íª«ºØ¡A¦Ó¡u±µ¯Ç¡vª«ºØ«h«Ü¤Ö³Q±H¥Í¡A¦p¦³ªº¸Ü¡A¥i¯à¦b¶i¤Æ¹Lµ{¤¤¨S¦³¾D¨ìÄY«±H¥Í °²³](2) -¡u±µ¯Ç¡vª«ºØ¾D±H¥Í¾ú¥v¸ûµu¡G¡u©Úµ´¡v¦æ¬°¨Ó¤£¤Î¶i¤Æ¡A³o¥i¯à·|¥ÑÀô¹ÒÅܤƦ]¯À©Îª«ºØ¤J«I¦Ó³y¦¨ °²³](3) - ¬Û¹³ªº§Z¡G¡u©Úµ´¡vª«ºØªº§Z¥i¯à»P±_±H¥Íªº§Z¤£¬Û¹³¡A®e©ö³QÃѯ} °²³](4) ¡V ¤£¦Pªº³¾ºØ¡G¦pªG±H¥D¦³¤Ï±H¥Í¦æ¬°¡A¨Ò¦pÅ髬¸û¤j¦Ó¥i¥H§â±_±H¥ÍªÌªº§Z°Ö°_©Î¥µ¥X±_¥~¡A¨º»ò¡u±µ¯Ç¡v©M¡u©Úµ´¡vÀ³Äݩ󤣦Pªº³¾ºØ¤¤¡C¤£¹LRobthsten«ü¥X ¡A¦b³¶§Î¥Øªº4Ӭ줤¡A¨CӬ쪺³¾Ãþ³£¦³¡u±µ¯Ç¡v©M¡u©Úµ´¡vÃþ§O¡C ¥Ñ¤W±¬Ý¥X¡A¥Ø«eÁÙ¨S¦³¤@Óª«ºØª¬ºA«ü¼Ð¯à°÷§PÂ_ª«ºØ¬O¡u±µ¯Ç¡vÁÙ¬O¡u©Úµ´¡vªºÃþ«¬¡C ±q¿ò¶Ç¾Ç¤W¸Ñ»¡¡A¡u±µ¯Ç¡v¬O¦]¬°±H¥D̯ʥFÃѧO¥~¨Ó§Zªº¯à¤O¡A·|¾ÉPÄY«·l¥¢¡A¦Ó¨ã¦³³oºØ¯à¤O¦Ó¡u©Úµ´¡vªº¡A·|¨ü¯qê²L¡C ±q¡u¦ÛµM¿ï¾Ü¡v(Natural Selection¡A©Î²³æ»¡¡u®z¦×±j¹¡v)¨Ó¬Ý¡A¦³¨Çª«ºØ¥i¯àn¾a¬ðÅÜ(mutation)©Î°ò¦]«²Õ¦Ó±o¥H²£¡u©Úµ´¡v¦æ¬°¡A±q¦Ó±o¥HÄ~Äò±o¥H«O¯d¡A¶Ç©v±µ¥N¡C Robthsten±Àºâ¡A¡u©Úµ´¡v¦æ¬°ªº°ò¦]n¶Ç§G¦Ü¾ãӺظs(§Y¬O¥Ñ¡u±µ¯Ç¡vÅܬ°¡u©Úµ´¡v)¡A »Ýn¬ù20-100¦~®É¶¡¡A³o¥ç¸ÑÄÀ¤F¤Wz¬°¬Æ»ò¦³¨Ç±H¥D·|§¹¥þ±µ¨ü±_±H ª« ºØ ªº §Z ¡A ¦Ó¦³¨Ç«h§¹¥þ©Úµ´ ¡C ³o«ü¥X¤Fª«ºØªº¾AÀ³¬O¨M©w©ó¦³¨S¦³µo¥Í¿ò¶Ç¬ðÅÜ¡A¡u©Úµ´¡v¦æ¬°¬O«Ü¦nªº¾AÀ³¡AÅý¦ÛµM¿ï¾Üµo´§§@¥Î¡C °Ñ¦Ò¸ê®Æ¡G Rothstein S. I. 1975a, Evolutionary rates and host defences against avian brood parasitism Amer. Natur. Vol 109: 161-176 |
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Title: Re: Koel ¾¸ÃY chicks Post by Koel_Ko on May 17th, 2003, 4:06pm Actually, brood parasitism is quite an advanced method for ensuring the survival of a species' offsprings (that is, if successfully practiced). I would suggest that the acceptence of these brood parasites, at least for the Magpie's case, is because the parasitic behaviour of the Koels cause no significant effect on the population of the Magpies, so that the reproduction of the Magpies are not on the whole hindered. Would it be justified to say that if the parasitic behaviour could have so serious an effect on the population of the magpies, they could develop the ability to recognize the alien chicks? It might not be so, though, for the Kirtland's Warbler in N America, sadly, is on the brink of extinction, mainly due to habitat destruction (recalling the sedimentation of the Deep Bay?) and the situation is aggravated by cowbird parasitism. I should hope that they could develop the ability to recognize cowbird chicks; but that does not seem to be the case! |
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Title: Re: Koel ¾¸ÃY chicks Post by ³¾¤Í¢Ï on May 17th, 2003, 6:37pm ¤@ºØ³¾Ãþ¯à§_µo®i¥X¹ï§Ü±_±H¥Íªº¥»¯à¡A§Ú¬Û«H¥Dn¬O¾a¨e̪º¹B®ð¡A¦]¬°¦Û½Ã¦æ¬°¤£·|±q±H¥D³¾Ãþªº¥D°Ê«ä¦Ò±o¨Ó¡A¦Ó¬O¹³¨ä¥L¥»¯à¤@¼Ë¡A±qµL¼Æªº°ò¦]¬ðÅÜ¡B°ò¦]«²Õ©Î¬J¦³ªº¥»¯à¤¤¿z¿ï¥X¨Ó¡C·íµM¡A¦pªG±H¥Í°ÝÃD¤w¦³¬Û·íªøªº®É¶¡¡A«h¨eÌ·|¦³¤ñ¸û¤jªº¾÷·|½í¨ì¯à°÷´£¨Ñ¦Û½Ã¥»¯àªº°ò¦]¡C ·í±_±H¥Í¥X²{ªº®ÉÔ¡A¦pªG±H¥D¤£©¯¨S¦³¦³®Äªº¦Û½Ã¥»¯à¡A¤S¥¼¯à¤Î®É¹J¤W¬ÛÀ³¥i¥Îªº°ò¦]¬ðÅܩΫ²Õ¡A³oÓª«ºØ¥i¯à·|¦]Ác´Þ¤£¨¬¦Óµ´·À¡C¦pªG±H¥Í°ÝÃDÄY«¡A¥i¥HÅý¦³¦Û½Ã¥»¯àªºÓÅé¥[§Ö¦bºØ¸s¤¤¶Ç¼½¡A¦ý¬O²Ä¤@Ó³oºØÓÅé¯à§_¥X²{´N¯uªºn¾a¨e̪º¹B®ð¤F¡C |
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