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, BBS Moderators, George_Ho, carmen, Forrest FONG)    Heuglin's Gull 烏灰銀鷗 title was amended « Previous topic | Next topic » Pages: 1  Reply Send Topic Print    Author  Topic: Heuglin's Gull 烏灰銀鷗 title was amended  (Read 552 times) KK Hui BBS Member BBS God Bird Photography - at its best ...     Posts: 940 Heuglin's Gull 烏灰銀鷗 title was amended « on: Mar 19th, 2004, 10:20pm » Quote Modify 165 Heuglin's Gull 烏灰銀鷗 Mai Po Nature Reserve 米埔自然保護區 19/3/2004 EOS-10D, EF600/4L + EF1.4x Evaluative @ -2/3, ISO 400   A shot of this Yellow-legged Gull marks my return to Mai Po NR ...       KK Hui ARPS www.geocities.com/kkhui_001 « Last Edit: May 25th, 2004, 10:27am by BBS Moderators » Logged Griffin BBS Member BBS God     Gender: Posts: 139 Re: Yellow-legged Gull « Reply #1 on: Mar 19th, 2004, 10:35pm » Quote Modify Yeah!   Logged Daniel CK Chan BBS Member BBS God I love nature photography!     Gender: Posts: 794 Re: Yellow-legged Gull « Reply #2 on: Mar 20th, 2004, 1:21pm » Quote Modify KK, wait to see more.............Daniel « Last Edit: Mar 21st, 2004, 8:10pm by Sophia » Logged Daniel CK Chan http://www.danielckchan.com gjcarey BBS Member BBS God     Posts: 115 Re: Yellow-legged Gull « Reply #3 on: Mar 21st, 2004, 9:40am » Quote Modify Excellent shot KK. However, it's not Yellow-legged Gull. Confusingly, Yellow-legged Gulls in HK, which are of the taxon Larus cachinnans mongolicus have pinkish legs!   The deep yellow legs of this bird indicate this is a Heuglin's Gull, as do the following:   a) the streaks on the nape and head (on mongolicus these are absent at this time)   b) fairly dark grey upperparts (on mongolicus these are significantly paler)   c) incomplete primary moult. You can see on this photo that the outermost primary, which is the longest on gulls, is not yet full-grown.   d) there is only one relatively small white 'mirror' in the outer primaries; on mongolicus this is usually larger and there is often two.   Regards,   Geoff Logged KK Hui BBS Member BBS God Bird Photography - at its best ...     Posts: 940 Re: Yellow-legged Gull « Reply #4 on: Mar 21st, 2004, 10:25am » Quote Modify Thanks for your interesting input, Geoff!       Identifying gull species has never been easy, I know. I'm now totally confused to say the least ... What exactly is a Heuglin's Gull?   and it's scientific name again please? It's not in my reference books. What about Vega Gull?     Anyway I thought I post here another shot taken on the same day/time and probably of the same species too ...     Best KK Hui ARPS www.geocities.com/kkhui_001 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 »

香 港 觀 鳥 會
Hong Kong Bird Watching Society

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