HKBWS BBS 香 港 觀 鳥 會 新 聞 組    Discussion Area 討論區    General 一般問題 (Moderators: BBS Moderators, Webcreeper)    how old is a bird? « Previous topic | Next topic » Pages: 1  Reply Send Topic Print    Author  Topic: how old is a bird?  (Read 552 times) klinsmann Guest how old is a bird? « on: May 7th, 2003, 7:59pm » Quote Modify Remove can anyone tell me how to distinguish a bird's age? such as we can determine the age of a fish by looking at its earbone.... Logged Alex_Tung BBS Member BBS Full Member I love bird watching!     Gender: Posts: 35 Re: how old is a bird? « Reply #1 on: May 7th, 2003, 8:30pm » Quote Modify Hi Klinsmann,     In general, from the difference of colour and pattern of their feathers, we can distinguish juvenile, sub-adult and adult bird. For a certain kinds of species, e.g. Gulls, their colours of feather enable us to distinguish 1st winter or 2nd winter bird   For some species, the male and female have a different appearances, and the juvenile (no matter male or felmale) would look like the adult female.     Some juvenile would have a paler feather colour comparing with adult.     All the above depend on different species. Suggest you to look for reference books for a particular species.     But I think it is rather difficult for us to determine the acutal age of birds once they have become an adult.     Any experienced birder can help on this?   Hope this help   By the way, are you Ah Leung?   Tung « Last Edit: May 7th, 2003, 11:40pm by Alex_Tung » Logged Samson So BBS Member BBS Senior Member I mean what I say     Gender: Posts: 52 Re: how old is a bird? « Reply #2 on: May 7th, 2003, 10:03pm » Quote Modify Another way to determine the age is bird banding (or bird ringing).   鳥友A had posted an interesting link on 26th April.  You can have a look.   Logged Doing what you like is freedom. Liking what you do is happiness. Ideals are like the stars, we never reach them; but like mariners, we chart our course by them. klinsmann Guest Re: how old is a bird? « Reply #3 on: May 7th, 2003, 10:11pm » Quote Modify Remove yup..ah tung... i am ah leung..haha Logged Captain Guest Re: how old is a bird? « Reply #4 on: May 9th, 2003, 9:45am » Quote Modify Remove Or you can check their ID cards or simply ask them directly.     ~~~~~~~~~~~~Kidding 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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