HKBWS BBS 香 港 觀 鳥 會 新 聞 組    Special Topics 特別主題    Tern Conservation 燕鷗保育 (Moderators: Tern Group, BBS Moderators)    Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Previous topic | Next topic » Pages: 1 2  Reply Send Topic Print    Author  Topic: Re: Tern Survey 2005 Results 2005年度燕鷗調查結果  (Read 2765 times) Tern Group BBS Moderator BBS Member BBS God We love terns!     Posts: 116 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « on: Jul 8th, 2005, 3:42am » Quote Modify   最後更新日期 Last updated: 7/7/05   自從上月連日大雨之後，黑枕燕鷗似乎已經放棄了在大鵬灣繁殖，但在大鵬灣以北 的水域卻有30多隻。   It seems that Black-naped Terns have given up breeding at Mirs Bay after the continuous rains in the last month.  However over 30 birds were found in waters to the north of the area.   Logged Captain BBS Member BBS God I love bird watching!     Posts: 134 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Reply #1 on: Jul 8th, 2005, 9:11am » Quote Modify Do we have such data set of bird abundance in 2001? A bad weather persisted in the whole June in 2001. So, a comparsion could be made with such data set.     Such comparsion could allow us to see the impact of bad weather on the number of tern nests, thus we could know whether bad weather is one of the determinants on the nest abundance of terns.     Captain Logged Captain BBS Member BBS God I love bird watching!     Posts: 134 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Reply #2 on: Jul 8th, 2005, 9:39am » Quote Modify More comments.   When carefully looking into the data, it looks likely that fewer birds visiting HK in the early breeding season in April and May (i.e. before the bad weather in June) than last yr. So, the decline may be caused by other factors.   Also, did the terns start to lay eggs or build their nests in June? It looks likely that the bad weather could affect the breeding success, rather than the abundance of breeding birds.   Comparing the data set in 2005 with the highest count in 2004 could miss some interesting difference. So, it may be better to compare the whole data set with each other.   Captain     Logged HF_Cheung Committee Member BBS God I love bird watching!     Posts: 224 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Reply #3 on: Jul 8th, 2005, 2:16pm » Quote Modify My own personal view is that last year's disturbances by Peregrine Falcon and others have finally forced some Terns to stop coming to HK to breed.   This explains the decrease in number in May, and also affect the average count of Bridled Tern this year.     The recent rain affect the breeding success rate.  That actually cause the BN Terns in Kung Chau to leave the area early.  They have given up breeding in the remaining breeding season.     HF Cheung Logged Captain BBS Member BBS God I love bird watching!     Posts: 134 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Reply #4 on: Jul 8th, 2005, 5:21pm » Quote Modify Hi Ho Fai,   Thanks for the feedback.   Just one comment on your feedback. Pls don't mind.   Do we have any data about the nest failure in respond to the Peregrine Falcon (s) in last yr? or the degree of disturbance. Colonially breeding birds will give up the breeding site only if there is a prolonged nest failure and disturbance.     It is hardly to believe that site abandonment of such big colony is due to the Falcon, esp terns should interact with natural predators over millions of yrs.     So, the Falcon may disturb some birds may not so serious that it caused severe nest failure in last yr. I guess other factors, like prey availability and the safety of wintering site may contribute the decline. Logged Tern Group BBS Moderator BBS Member BBS God We love terns!     Posts: 116 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Reply #5 on: Aug 7th, 2005, 5:28pm » Quote Modify The latest results   最新結果   Logged Sze BBS Member BBS God I love bird watching!     Gender: Posts: 1051 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Reply #6 on: Aug 8th, 2005, 12:39am » Quote Modify 8月4日（星期四）好出奇地我係吐露港近三杯酒對出海面見到一隻黑枕燕鷗！   I saw one Black-naped Tern at Tolo Channel on 4Aug (Thu)!   « Last Edit: Aug 8th, 2005, 12:41am by Sze » Logged 食飽就(目訓)咁至in！開心快樂每一天！ http://www.fotop.net/hokszewong Tern Group BBS Moderator BBS Member BBS God We love terns!     Posts: 116 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Reply #7 on: Aug 8th, 2005, 3:32am » Quote Modify 相信牠是在遷徙途中吧！我們在七月廿四日大埔環保協進會的活動中也見到一小群 ，還有一隻粉紅燕鷗。   Perhaps it was migrating.  We saw a small group together with a Roseate Tern during TPEA's trip on 24/7/05.   http://www.hkbws.org.hk/cgi-bin/yabb/YaBB.pl?board=TernConservation;acti on=display;num=1123407515 Logged TH_Kwan BBS Member BBS Full Member I love bird watching!     Gender: Posts: 48 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Reply #8 on: Aug 10th, 2005, 12:07am » Quote Modify On the 9th August 2005 at 5:20pm, a flock of around 30 black-naped terns were seen near the pier at Cho Wo Village, Tai Mong Chai, Sai Kung.  They were first seen far away in the sea next to the yachts, but then they gradually flew near the pier, entertaining us with a spectacular show with elegant flights plus occasional vertical dives for their fish meals. The spectacle lasted for about 10 minutes before each and every tern returned to the sea, stunning us with the extraordinary beauty of nature.     Isn't it true that the inner Sai Kung Sea is an unusual site to find such a big flock of black-naped terns?     今天八月九日下午五時二十分，在西貢大網仔早禾村對開海邊的碼頭，發現一大群 約三十隻的黑枕燕鷗。燕鷗最初被發現在海面的遊艇旁飛行。之後整群燕鷗一起飛 向碼頭旁的海灣，給我們帶來一個精采絕倫的「特技飛行」和「招牌插水式燕鷗覓 食表演」，使我們看到目瞪口呆，讚嘆不矣！   西貢內海發現這一大群黑枕燕鷗是否並不常見？ Logged Tern Group BBS Moderator BBS Member BBS God We love terns!     Posts: 116 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Reply #9 on: Aug 10th, 2005, 9:00pm » Quote Modify Thanks for the report.  Yes, this is the first time that I hear about a big flock of Black-naped Terns at that area.  They probably came from the colony to the south east of Sai Kung - the small rocky island where we found 90 of them on 22 July. It seemed that they would go as far as the sea to the south of Hong Kong Island to forage.   By the way, did they do any boat chasing there? It could be a sign that they will be leaving soon.     謝謝你的報告。對，這是我第一次聽到有一大群黑枕燕鷗在那個地方。牠們很可能 來自西貢西南面的一個石質小島，上月22日我們曾在那處找到90隻，牠們似乎會飛 到遠至香港島南部水域覓食。   不知當時牠們有沒有玩「追船」？那可能是快要離港回歸海洋的先兆呢。   http://www.hkbws.org.hk/cgi-bin/yabb/YaBB.pl?board=TernConservation;acti on=display;num=1123408546 « Last Edit: Aug 10th, 2005, 9:16pm by Tern Group » Logged TH_Kwan BBS Member BBS Full Member I love bird watching!     Gender: Posts: 48 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Reply #10 on: Aug 10th, 2005, 10:41pm » Quote Modify Yes, they did chase after the yachts.     牠們的確有追逐船隻的行為。   Maybe it is about time they leave Hong Kong.   也許牠們正準備離港了。   TH Kwan Logged Sze BBS Member BBS God I love bird watching!     Gender: Posts: 1051 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Reply #11 on: Aug 10th, 2005, 11:00pm » Quote Modify on Aug 10th, 2005, 10:41pm, TH_Kwan wrote: Yes, they did chase after the yachts.     牠們的確有追逐船隻的行為。   Maybe it is about time they leave Hong Kong.   也許牠們正準備離港了。   TH Kwan   去年在大鵬灣見到的追船壯觀場面，今年過了西貢！ 無緣見到啦！希望明年他們會有些回大鵬灣繁殖啦！   去年燕鷗追船奇景 « Last Edit: Aug 10th, 2005, 11:00pm by Sze » Logged 食飽就(目訓)咁至in！開心快樂每一天！ http://www.fotop.net/hokszewong Gary BBS Member BBS Senior Member I love bird watching!     Gender: Posts: 100 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Reply #12 on: Aug 23rd, 2005, 9:02am » Quote Modify More than a hundred of Black-naped tern (including adult and juvenile), a sign of breeding, were seen in the "rocky island" in Sai Kung. Also seen were a few of Roseate and Bridled Tern.   Gary Logged Sze BBS Member BBS God I love bird watching!     Gender: Posts: 1051 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Reply #13 on: Aug 23rd, 2005, 3:49pm » Quote Modify on Aug 23rd, 2005, 9:02am, Gary wrote: More than a hundred of Black-naped tern (including adult and juvenile), a sign of breeding, were seen in the "rocky island" in Sai Kung. Also seen were a few of Roseate and Bridled Tern.   Gary   We also saw more than a hundred of Terns in a rocky island in Sai Kung during the outing on 3Jul and 22Jul! Maybe we saw the same rocky island!   Logged 食飽就(目訓)咁至in！開心快樂每一天！ http://www.fotop.net/hokszewong Tern Group BBS Moderator BBS Member BBS God We love terns!     Posts: 116 Re: Tern Survey 2005 Results 2005年度燕鷗調查結果 « Reply #14 on: Aug 23rd, 2005, 8:40pm » Quote Modify on Aug 23rd, 2005, 9:02am, Gary wrote: More than a hundred of Black-naped tern (including adult and juvenile), a sign of breeding, were seen in the "rocky island" in Sai Kung. Also seen were a few of Roseate and Bridled Tern.   Gary     Dear Gary,   Would you please tell us the date and time of your sighting?   Thanks! 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