HKBWS BBS 香 港 觀 鳥 會 新 聞 組    Discussion Area 討論區    Photo Gallery 相片分享 I (Moderators: carmen, George_Ho, Forrest FONG, Kwok Jai, BBS Moderators)    Yellow-legged Gull  (mongolicus) « Previous topic | Next topic » Pages: 1  Reply Send Topic Print    Author  Topic: Yellow-legged Gull  (mongolicus)  (Read 1497 times) John Holmes BBS Member BBS God     Posts: 103 Yellow-legged Gull  (mongolicus) « on: Jan 17th, 2006, 11:20pm » Quote Modify Yellow-legged Gull Larus cachinnans (mongolicus) NSW   16/01/2006   20D EF600/4L + EF1.4x   Evaluative @ 0, ISO 400, 1/1000s, f/5.6   Yellow-legged Gull Larus cachinnans (mongolicus) NSW   16/01/2006   20D EF600/4L + EF1.4x   Evaluative @ 0, ISO 400, 1/1000s, f/5.6   Yellow-legged Gull Larus cachinnans (mongolicus) NSW   16/01/2006   20D EF600/4L + EF1.4x   Evaluative @ 0, ISO 400, 1/1250s, f/5.6     Yellow-legged Gull Larus cachinnans (mongolicus) NSW   16/01/2006   20D EF600/4L + EF1.4x   Evaluative @ 0, ISO 400, 1/1250s, f/5.6    Four pictures of the same individual.  In the latter two bill and leg colour are obscured by mud.  There were no other large gulls around for comparison.     Based on the pale grey mantle, light head streaking, white mirrors in dark wing tips, and pinkish legs, I think this is a "mongolicus".     However, I am ready to be corrected!     « Last Edit: Feb 28th, 2006, 1:00pm by BBS Moderators » Logged http://johnjemi.hkbirds.net/ KK Hui BBS Member BBS God Bird Photography - at its best ...     Posts: 940 Re: Yellow-legged Gull  (mongolicus) « Reply #1 on: Jan 18th, 2006, 8:41am » Quote Modify on Jan 17th, 2006, 11:20pm, John Holmes wrote: [img] ... Based on the pale grey mantle, light head streaking, white mirrors in dark wing tips, and pinkish legs, I think this is a "mongolicus" ...   Some nice shots here, John! I'd be tempted to just call it 'Herring Gull' ...   KK Hui FRPS www.geocities.com/kkhui_001 Logged gjcarey BBS Member BBS God     Posts: 115 Re: Yellow-legged Gull  (mongolicus) « Reply #2 on: Jan 18th, 2006, 4:10pm » Quote Modify As John says, it's a Yellow-legged Gull Larus (cachinnans) mongolicus.   In addition to the pale upperparts, the following are important features:   1. large white mirror near the tip of the p10, the outermost primary 2. extensive black on the wing tip, reaching toward the primary coverts and also including p4 and possibly p3 3. dull pinkish legs (despite the English name used, Chinese birds never seem to have truly yellow legs) 4. completed primary moult: p10, the outermost, is fully grown. Heuglin's Gull at this time of year will still have the outer few primaries yet to grow fully.   Geoff 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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