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Cosumnes |
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| 地點: |
| Woodbridge Crane Preserve/Cosumnes River Preserve |
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| Twin Cities, CA Yahoo Google Map |
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| 時間: |
開始時間: 星期日 二月 06, 2005 7:30 am
結束時間: 星期日 二月 06, 2005 7:29 pm |
| 類別: |
戶外活動 -- 兗?B、?Q、??、雁、天?Z |
| 俱樂部: |
[NPhopper] |
| 性質: |
公開活動 [?] |
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| chun 寫到: | I'm thinking that birdwatching again this coming weekend (2/5). But there are still fog / haze in the morning central valley.according to forecast. What do you think about it? Is next weekend too late to watch these migrating birds? Do you want to watch birds again? What's your schedule?
Also, anyone else are highly welcome to join this birdwatching activity. |
I have other commitment on Sat 2/5. How about Sun 2/6? Meet at the same place, Marina Foods in San Mateo/Foster City, at 7am?
If you have a full day, we could go up Sacramento Natl Wildlife Refuge, a much bigger place.
Please see report and photos for 1/23 trip.
We hope to see and photograph more than birds showed up in previous trip:Sandhill Crane 沙丘?Q
Tundra Swan ?鱸?天?Z
Snow Goose 雪雁
American White Pelican 白?Y??
Common Yellowthroat ?S喉?L
Red-tailed Hawk 剪尾??
Prairie Falcon 原隼
American Kestrel 美洲剪隼（雀??）
Great Horned Owl 大角??鏂??
Wilson's Snipes 田??
Pintail ??尾??
Green-winged Teal 小水??
American Wigeon 葡萄胸??
various sandpipers ?? Please dress in plain or natural color but not all white, brilliant, strips nor prints. |
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Disclaimer: The Bayareadragon.com, its members, and event leaders take no responsibility and will not be held responsible for any injuries or accidents that may occur during the posted events. Some events are inherently dangerous and accidents will happen. By joining the club or participating in any events posted on the Bayareadragon.com web page you are taking responsibility for your own safety and well-being. It is your responsibility to determine if the event organizer has the experience and competence to lead the event. The Bayareadragon.com does not certify or confirm the qualifications of any of its members to lead or participate in events. |
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| View RSVP Details |
RSVP (4)
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MeiLien, chun, chickengrandma, yithan |
02/04/05 - Undefined |
| I will drive my car and pick up rider(s). (1) |
chun |
| I need a ride. (2) |
MeiLien, yithan |
| I need to borrow binoculars. (1) |
MeiLien |
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| 發表人 |
郵件內容 |
chun
中尉
性別:
Verified: Yes
註冊時間: 2005-01-21
文章: 101
居住地: Santa Clara
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 發表於: 星期五 二月 04, 2005 5:23 pm 文章主題: |
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Sunday (2/6) ok to me. The only thing I worry is haze / fog in the morning,
so that visibility is poor, which is not good for both driving and birdwatching.
So can we shift the departure time from 7:00am to 7:30am or even 8:00am?
Because no use to arrive early and wait haze / fog to dissipate there.
Sacramento Natl Wildlife Refuge looks is too far away, the one way will take
probably at least 3 hrs. Also I may have some friends from photograph group
to join this birdwatching / photographing.
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chickengrandma
少將
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Verified: Yes
註冊時間: 2005-01-10
文章: 1144
居住地: Palo Alto
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| 發表於: 星期五 二月 04, 2005 10:14 pm 文章主題: Change to meet at 7:30am |
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| chun 寫到: | So can we shift the departure time from 7:00am to 7:30am or even 8:00am?....
Sacramento Natl Wildlife Refuge looks is too far away |
OK, let's meet at 7:30am. I think Mei and others won't object.
Meet at Marina Foods 永和市場, 2992 S. Norfolk St., San Mateo.
You are right, we will go to Sacramento NWR next tiime.
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panweilin
上將
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Verified: Yes
註冊時間: 2004-09-28
文章: 5547
居住地: 北京
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| 發表於: 星期一 二月 07, 2005 6:39 pm 文章主題: |
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Nice birding pictures! 
Al, 現在的NPhopper 在你的帶動下真成了山水花鳥，無所不玩啦! 
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chickengrandma
少將
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註冊時間: 2005-01-10
文章: 1144
居住地: Palo Alto
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| 發表於: 星期二 二月 08, 2005 12:07 pm 文章主題: Nice day to photo, nice people and thousands of birds |
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9 ppl showed up on 2/6, Sunday, a much nicer day than previous trip. Chun rounded up 3 of his phtotographer friends, Grace, Charles and Howard, joined by 3 NPhoppers, Mei, Yithan amd me, as well as my young alumnae, Weipeng and his bride, Tang-Chi.
The pro's photos are different, see the Red-tailed Hawk and Sandhill Crane. There will be more to be posted in 攝影論壇 of http://www.chinesephotographers.net/
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chickengrandma
少將
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文章: 1144
居住地: Palo Alto
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chickengrandma
少將
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註冊時間: 2005-01-10
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居住地: Palo Alto
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chun
中尉
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Verified: Yes
註冊時間: 2005-01-21
文章: 101
居住地: Santa Clara
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| 發表於: 星期四 二月 10, 2005 11:46 am 文章主題: Re: More Pro's Pix |
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Hi， Al， 這次我拍到一隻鷹，有點象你的logo，可惜拍糊了，
不過大緻輪廓還在。俺把圖貼在這里，你看看是什麼鷹？
另外這次觀鳥沒有看到雪雁（Snow Goose）。難道雪雁飛走
了嗎？還是在別的什麼地方這個時候仍然可看到這種雁？謝謝
你的解答。
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chickengrandma
少將
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註冊時間: 2005-01-10
文章: 1144
居住地: Palo Alto
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| 發表於: 星期五 二月 11, 2005 10:00 am 文章主題: Re: Harrieer and Geese |
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| chun 寫到: | | 這次我拍到一隻鷹，有點象你的logo，可惜拍糊了，不過大緻輪廓還在。俺把圖貼在這里，你看看是什麼鷹？ |
憑一張照片不好猜，體型大小和細微的特征看不到。如果比最常見的紅尾鷹稍小，可能是雄性的澤狂鳥(狂在上、鳥在下，念qiang2，俗稱“鷂子”，Northern Harrier)。如你看到背面屁股有白帶，就可確定。因我們有看到兩三隻鷂子低飛。其他如鏽鷹 Ferruginous Hawk (和紅尾鷹同大或稍大)較少見。
我的logo 是加里福尼亞神雕 California Condor。看我的博客
| 引言回覆: | 另外這次觀鳥沒有看到雪雁（Snow Goose）。難道雪雁飛走
了嗎？還是在別的什麼地方這個時候仍然可看到這種雁？ |
雪雁有一回我在 Woodbridge Road 底，看到幾百上千一大群。可能她們往北挪一點。據 Sacramento NWR Complex 一月份統計有三十萬隻 http://sacramentovalleyrefuges.fws.gov/WATERFOWL%20SURVEY%20SUMMARY%20early%20Jan%2005.htm 他們用 White goose 的名稱。在北邊 I-5 旁的 Colusa NWR 最多，有十三萬多隻，咱們可去看看。那邊應有白面黑?q White-faced Ibis，我這一季還沒看過呢!
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chickengrandma
少將
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居住地: Palo Alto
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| 發表於: 星期五 二月 11, 2005 11:20 am 文章主題: The Condorman |
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| chickengrandma 寫到: | | 我的logo 是加里福尼亞神雕 California Condor。看我的博客 |
江湖上人稱「神雕俠劉過」是也 
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connieb
中校
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Verified: Yes
註冊時間: 2005-05-16
文章: 387
居住地: San Mateo, CA
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| 發表於: 星期五 六月 24, 2005 2:24 pm 文章主題: |
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chickengrandma, I highly doubt you were standing beside the condor.  I think it's not a condor, but it looks like a vulture because the bird doesn't have feather on the head which is the commonality of a vulture.
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chickengrandma
少將
性別:
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註冊時間: 2005-01-10
文章: 1144
居住地: Palo Alto
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| 發表於: 星期一 六月 27, 2005 9:57 pm 文章主題: Re: Condor and Vulture |
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| connieb 寫到: | | the bird doesn't have feather on the head which is the commonality of a vulture. |
You are right in this part. Jin Yong (金庸) did describe in his book how ugly Yang Guo's (楊過) condor was.
However, Cathartidae family 美洲鷲科 has 3 spieces in U.S.- Turkey Vulture (Cathartes aura) 火雞禿鷲, common in all U.S.
- Black Vulture (Coragyps atratus) 黑鷲, in E. and S. U.S.
- California Condor (Gymnogyps californianus) 加州雕, in California, endangered In China, there are 5 spieces of vulture. But they are grouped with eagles and hawks as Accipitridae family 鷲鷹科- Cinereous Vulture (Aegypius monachus) 禿鷲 Mongolia, Gansu, Qinghai and N. Xinjiang
- Red-headed Vulture (Aegypius calvus) 黑兀鷲 rare in W. Yunan
- Himalayan Griffon (Gyps himalayensis) 高山兀鷲 Tibet along Himalayan Mtn, part of Qinghai, Gansu, Sichuan and Yunan
- Oriental White-backed Vulture (Gyps bengalensis) 白背兀鷲 rare in S. Yunan
- Lammergeier (Gypaetus barbatus) 胡兀鷲 Tibet, part of Qinghai, Gansu, Sichuan and W. Xinjiang The above 2 families, Falconidae family 隼科 and couple others form the Order of Falconiformes 鷹形目.
chickengrandma 在 星期二 六月 28, 2005 9:30 pm 作了第 1 次修改 |
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connieb
中校
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居住地: San Mateo, CA
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| 發表於: 星期二 六月 28, 2005 3:47 pm 文章主題: |
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| You're really a bird expert. Good knowledge for me. Let me put it this way: vultures, eagles, hawks and condors should belong to the same big family, but vultures don't grow head feather but others do. Right?
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chickengrandma
少將
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| 發表於: 星期二 六月 28, 2005 9:22 pm 文章主題: New and Old World Vulture |
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| connieb 寫到: | | vultures, eagles, hawks and condors should belong to the same big family, but vultures don't grow head feather but others do. Right? |
Hehe, they all belong to a big Order of Falconiformes 鷹形目. It brings about an interesting question of why New and Old Worl Vultures are different? There has been a theory of convergent evolution 異源同化論: | Don Roberson 寫到: | | The New World Vultures, or "cathartid vultures," are the carrion-eating "buzzards" of the New World. They are similar in many ways to the 15 species of Old World Vultures (carrion-eating habits, bare heads, strong bills, incredible powers of flight) but the two groups have evolved separately from different ancestors. Indeed, the two sets of vultures -- New World and Old -- are among the world's best examples of convergent evolution (Houston 1974). There is some evidence that New World Vultures evolved from the stork lineage (DNA hybridization studies by Sibley & Ahlquist 1990, others summarized by AOU 1998), but apparently there is recent biochemical and other research contrary to this theory (e.g., papers presented at 2002 A.O.U. convention; see also Griffiths 1994). |
| 雜祖法 寫到: | | 例如過去在鳥類的分類體系上，食肉性的新世界禿鷹( New World Vulture)由于食性及外部特徵的關系，一直被認為和舊世界禿鷹( Old World Vulture)的類緣關系較近，但根據解剖資料卻認為新世界禿鷹應和一些鸛類關系較近；後來 Avise等人將這些受爭議的鳥類之分子形質資料加以分析，結果新世紀禿鷹應和鸛類的類源關系較近。這顯示了在生物演化過程中，由于內外在環境因子的改變，單憑外部形質來界定類源關系是可能有錯誤的，前例即是因環境因子導緻新世紀禿鷹趨同演化，造成其外形及食性接近舊世紀禿鷹的結果。 |
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現在是美國西部時間 星期五 七月 30, 2010 8:17 am
