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Cosumnes |
| From: |
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| Location: |
| Woodbridge Crane Preserve/Cosumnes River Preserve |
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| Twin Cities, CA Yahoo Google Map |
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| When: |
From Sun Feb 06, 2005 7:30 am to Sun Feb 06, 2005 7:29 pm (included) |
| Category: |
户外活动 -- 兖?B、?Q、??、雁、天?Z |
| Group: |
[NPhopper] |
| Type: |
Public [?] |
| RSVP: |
Recommended [?]
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Not needed |
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| chun wrote: | 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 ?鲈?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??钷??
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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| Author |
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chun
中尉
Gender:
Verified: Yes
Joined: 21 Jan 2005
Posts: 104
Location: Santa Clara
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 Posted: Fri Feb 04, 2005 5:23 pm Post subject: |
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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
少将
Gender:
Verified: Yes
Joined: 10 Jan 2005
Posts: 1145
Location: Palo Alto
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| Posted: Fri Feb 04, 2005 10:14 pm Post subject: Change to meet at 7:30am |
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| chun wrote: | 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 永和市场, 2992 S. Norfolk St., San Mateo.
You are right, we will go to Sacramento NWR next tiime.
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panweilin
上将
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Verified: Yes
Joined: 28 Sep 2004
Posts: 5547
Location: 北京
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| Posted: Mon Feb 07, 2005 6:39 pm Post subject: |
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Nice birding pictures! 
Al, 现在的NPhopper 在你的带动下真成了山水花鸟，无所不玩啦! 
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chickengrandma
少将
Gender:
Verified: Yes
Joined: 10 Jan 2005
Posts: 1145
Location: Palo Alto
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| Posted: Tue Feb 08, 2005 12:07 pm Post subject: 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 摄影论坛 of http://www.chinesephotographers.net/
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chickengrandma
少将
Gender:
Verified: Yes
Joined: 10 Jan 2005
Posts: 1145
Location: Palo Alto
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chickengrandma
少将
Gender:
Verified: Yes
Joined: 10 Jan 2005
Posts: 1145
Location: Palo Alto
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chun
中尉
Gender:
Verified: Yes
Joined: 21 Jan 2005
Posts: 104
Location: Santa Clara
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| Posted: Thu Feb 10, 2005 11:46 am Post subject: Re: More Pro's Pix |
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Hi， Al， 这次我拍到一只鹰，有点象你的logo，可惜拍糊了，
不过大致轮廓还在。俺把图贴在这里，你看看是什么鹰？
另外这次观鸟没有看到雪雁（Snow Goose）。难道雪雁飞走
了吗？还是在别的什么地方这个时候仍然可看到这种雁？谢谢
你的解答。
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chickengrandma
少将
Gender:
Verified: Yes
Joined: 10 Jan 2005
Posts: 1145
Location: Palo Alto
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| Posted: Fri Feb 11, 2005 10:00 am Post subject: Re: Harrieer and Geese |
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| chun wrote: | | 这次我拍到一只鹰，有点象你的logo，可惜拍糊了，不过大致轮廓还在。俺把图贴在这里，你看看是什么鹰？ |
凭一张照片不好猜，体型大小和细微的特征看不到。如果比最常见的红尾鹰稍小，可能是雄性的泽狂鸟(狂在上、鸟在下，念qiang2，俗称“鹞子”，Northern Harrier)。如你看到背面屁股有白带，就可确定。因我们有看到两三只鹞子低飞。其他如锈鹰 Ferruginous Hawk (和红尾鹰同大或稍大)较少见。
我的logo 是加里福尼亚神雕 California Condor。看我的博客
| Quote: | 另外这次观鸟没有看到雪雁（Snow Goose）。难道雪雁飞走
了吗？还是在别的什么地方这个时候仍然可看到这种雁？ |
雪雁有一回我在 Woodbridge Road 底，看到几百上千一大群。可能她们往北挪一点。据 Sacramento NWR Complex 一月份统计有三十万只 http://sacramentovalleyrefuges.fws.gov/WATERFOWL%20SURVEY%20SUMMARY%20early%20Jan%2005.htm 他们用 White goose 的名称。在北边 I-5 旁的 Colusa NWR 最多，有十三万多只，咱们可去看看。那边应有白面黑?q White-faced Ibis，我这一季还没看过呢!
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chickengrandma
少将
Gender:
Verified: Yes
Joined: 10 Jan 2005
Posts: 1145
Location: Palo Alto
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| Posted: Fri Feb 11, 2005 11:20 am Post subject: The Condorman |
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| chickengrandma wrote: | | 我的logo 是加里福尼亚神雕 California Condor。看我的博客 |
江湖上人称「神雕侠刘过」是也 
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connieb
中校
Gender:
Verified: Yes
Joined: 16 May 2005
Posts: 387
Location: San Mateo, CA
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| Posted: Fri Jun 24, 2005 2:24 pm Post subject: |
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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
少将
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Verified: Yes
Joined: 10 Jan 2005
Posts: 1145
Location: Palo Alto
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| Posted: Mon Jun 27, 2005 9:57 pm Post subject: Re: Condor and Vulture |
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| connieb wrote: | | 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 (杨过) condor was.
However, Cathartidae family 美洲鹫科 has 3 spieces in U.S.- Turkey Vulture (Cathartes aura) 火鸡秃鹫, common in all U.S.
- Black Vulture (Coragyps atratus) 黑鹫, 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 鹫鹰科- Cinereous Vulture (Aegypius monachus) 秃鹫 Mongolia, Gansu, Qinghai and N. Xinjiang
- Red-headed Vulture (Aegypius calvus) 黑兀鹫 rare in W. Yunan
- Himalayan Griffon (Gyps himalayensis) 高山兀鹫 Tibet along Himalayan Mtn, part of Qinghai, Gansu, Sichuan and Yunan
- Oriental White-backed Vulture (Gyps bengalensis) 白背兀鹫 rare in S. Yunan
- Lammergeier (Gypaetus barbatus) 胡兀鹫 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 鹰形目.
Last edited by chickengrandma on Tue Jun 28, 2005 9:30 pm; edited 1 time in total |
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connieb
中校
Gender:
Verified: Yes
Joined: 16 May 2005
Posts: 387
Location: San Mateo, CA
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| Posted: Tue Jun 28, 2005 3:47 pm Post subject: |
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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
少将
Gender:
Verified: Yes
Joined: 10 Jan 2005
Posts: 1145
Location: Palo Alto
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| Posted: Tue Jun 28, 2005 9:22 pm Post subject: New and Old World Vulture |
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| connieb wrote: | | 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 鹰形目. It brings about an interesting question of why New and Old Worl Vultures are different? There has been a theory of convergent evolution 异源同化论: | Don Roberson wrote: | | 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). |
| 杂祖法 wrote: | | 例如过去在鸟类的分类体系上，食肉性的新世界秃鹰( New World Vulture)由于食性及外部特徵的关系，一直被认为和旧世界秃鹰( Old World Vulture)的类缘关系较近，但根据解剖资料却认为新世界秃鹰应和一些鹳类关系较近；后来 Avise等人将这些受争议的鸟类之分子形质资料加以分析，结果新世纪秃鹰应和鹳类的类源关系较近。这显示了在生物演化过程中，由于内外在环境因子的改变，单凭外部形质来界定类源关系是可能有错误的，前例即是因环境因子导致新世纪秃鹰趋同演化，造成其外形及食性接近旧世纪秃鹰的结果。 |
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