HKBWS BBS 香 港 觀 鳥 會 新 聞 組    Discussion Area 討論區    Photo Gallery 相片分享 I (Moderators: Kwok Jai, George_Ho, Forrest FONG, carmen, BBS Moderators)    Black-Headed Gull 紅咀鷗 « Previous topic | Next topic » Pages: 1  Reply Send Topic Print    Author  Topic: Black-Headed Gull 紅咀鷗  (Read 777 times) Thomas_Chan BBS Member BBS God I love bird watching!     Posts: 432 Black-Headed Gull 紅咀鷗 « on: May 4th, 2006, 4:47pm » Quote Modify   30/4/2006 Mai Po 米埔浮橋 Leica 800mm + 20D ISO200 f5.6 1/2500s « Last Edit: May 5th, 2006, 2:05pm by Thomas_Chan » Logged David_Diskin BBS Member BBS Senior Member I love bird watching!     Posts: 89 Re: Saunder's Gull 黑咀鷗 « Reply #1 on: May 4th, 2006, 10:20pm » Quote Modify Anton -   Nice photo, but I think this is a 1st-summer Black-headed Gull, not a Saunders' Gull.   Firstly, no Saunders' Gulls have been reported off the boardwalk since Mai Po re-opened, as far as I'm aware. The only gulls I've seen off there recently are Black-headed Gulls. (Although, interestingly, with regard to Saunders' Gull, the Avifauna states that an "occasional bird may linger into late April or early May, and the latest spring record for HK concerns a first-summer that remained until 30 May 1993".) However, this is exceptional and any gull you see in HK at this time of year (late April/May) is likely to be Black-headed Gull.   Amongst other differences, the bill of Saunders' Gull is short, stubby & black. The bill on the bird in the photograph is longer, thinner and (less obviously) bi-coloured. The wing-pattern also indicates B-h Gull (although the angle of the photo makes this less easy to discern).   The photographs in "A Photographic Guide to the Birds of Hong Kong" are useful here, although unfortunately there are no pictures of Saunders' Gull in flight in the book.   dave diskin « Last Edit: May 4th, 2006, 10:27pm by David_Diskin » Logged Anton BBS Member BBS God Watch me if you can~     Gender: Posts: 142 Re: Saunder's Gull 黑咀鷗 « Reply #2 on: May 4th, 2006, 11:58pm » Quote Modify on May 4th, 2006, 10:20pm, David_Diskin wrote: Anton -   Nice photo, but I think this is a 1st-summer Black-headed Gull, not a Saunders' Gull.   Firstly, no Saunders' Gulls have been reported off the boardwalk since Mai Po re-opened, as far as I'm aware. The only gulls I've seen off there recently are Black-headed Gulls. (Although, interestingly, with regard to Saunders' Gull, the Avifauna states that an "occasional bird may linger into late April or early May, and the latest spring record for HK concerns a first-summer that remained until 30 May 1993".) However, this is exceptional and any gull you see in HK at this time of year (late April/May) is likely to be Black-headed Gull.   Amongst other differences, the bill of Saunders' Gull is short, stubby & black. The bill on the bird in the photograph is longer, thinner and (less obviously) bi-coloured. The wing-pattern also indicates B-h Gull (although the angle of the photo makes this less easy to discern).   The photographs in "A Photographic Guide to the Birds of Hong Kong" are useful here, although unfortunately there are no pictures of Saunders' Gull in flight in the book.   dave diskin   Hi~ Dave~ Thanks for your information~   (But are you referring to Thomas' photo instead?)   Anton « Last Edit: May 4th, 2006, 11:58pm by Anton » Logged KK Hui BBS Member BBS God Bird Photography - at its best ...     Posts: 940 Re: Saunder's Gull 黑咀鷗 « Reply #3 on: May 5th, 2006, 10:41am » Quote Modify See this shot of a Saunder's Gull taken in late March this year ... http://www.hkbws.org.hk/cgi-bin/yabb/YaBB.pl?board=PhotoGallery;action=d isplay;num=1144320835   KK Hui FRPS www.geocities.com/kkhui_001 « Last Edit: May 5th, 2006, 10:42am by KK Hui » Logged Thomas_Chan BBS Member BBS God I love bird watching!     Posts: 432 Re: Black-Headed Gull 紅咀鷗 « Reply #4 on: May 5th, 2006, 2:06pm » Quote Modify Thanks for Dave and KK identification!   « Last Edit: May 5th, 2006, 2:07pm by Thomas_Chan » Logged David_Diskin BBS Member BBS Senior Member I love bird watching!     Posts: 89 Re: Black-Headed Gull 紅咀鷗 « Reply #5 on: May 5th, 2006, 9:15pm » Quote Modify Anton -   Ooops. Not sure why I addressed my comments to you!! Apologies.   dave diskin Logged Anton BBS Member BBS God Watch me if you can~     Gender: Posts: 142 Re: Black-Headed Gull 紅咀鷗 « Reply #6 on: May 6th, 2006, 12:33pm » Quote Modify on May 5th, 2006, 9:15pm, David_Diskin wrote: Anton -   Ooops. Not sure why I addressed my comments to you!! Apologies.   dave diskin   HAHA~ That's OK~   Learnt something from your comments anyway~ Logged Pages: 1  Reply Send Topic Print Forum Jump: ----------------------------- Announcement 簡訊通告 -----------------------------  - Membership Affair 會員事務   - Outings / Activities 戶外活動 / 講座   - Projects 項目計劃   - Crested Bulbul Club 紅耳鵯俱樂部 ----------------------------- Discussion Area 討論區 -----------------------------  - General 一般問題   - Conservation 自然保育   - Bird Identification 鳥類辨識   - Birding Reports & Tips 觀鳥報告及心得 => Photo Gallery 相片分享 I   - Photo Gallery 相片分享 II ----------------------------- Special Topics 特別主題 -----------------------------  - Wild Birds & Avian Flu 野鳥與禽流感   - Sustainable Management Scheme in Long Valley 塱原可持續生態管理計劃   - Black-faced Spoonbill 黑臉琵鷺   - Goodbye Penfold 告別彭福   - Tern Conservation 燕鷗保育   - Black-eared Kite 鳶(麻鷹)   - Swifts and Swallows 燕與雨燕   - China Birdwatching Network 中國觀鳥活動網絡   - Winter Altas Survey 冬季鳥類普查   - Nature Conservation Policy 自然保育政策 ----------------------------- Knowledge Sharing 知識分享 -----------------------------  - FAQ 常見問題   - Archive 資料重溫 « Previous topic | Next topic »

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