• dawn256
  • 注册于:2004-12-31
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  • 所在地: Boston
发表于: 5/21/2005 10:12 发表主题: Birds of Spring 2005
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没来这么多天,感觉到似乎已错过了大半个春天似的。花的季节已经过去,好像夏天都快来了。随着春天的到来,跟着来的是一群北迁的鸟儿。其中最吸引人的是各式各样的warbler。

Warbler 是一群体型较小,而色彩鲜艳的小鸟,它们通常在南美洲,中美洲及美国南方过冬,随着春天的到来,大群Warbler飞临美国北部,繁殖并度过夏天。

New England的几大州也是Warbler喜欢度夏的地方,几乎是刚到五月,才见春暖花开,Warbler们就来了,它们会在这里逗留到九,十月份,才又南飞过冬。Boston附近Plum Island是春天Warbler及其它北迁的鸟儿集中的地方,在Cambridge的Mt Auburn Cemetery也是观察Warbler极好的地方。可惜最近忙得很,没机会外出,只能在附近走走。但即使在Riverway,Backbay Fens这些城市公园里,也会见到各种Warbler及其它北迁的鸟儿们。

清晨一走近树林,就听见各种各样悦耳婉转的鸟啼声。随着春天来临,Grey Catbird从四面八方冒了出来,一抓一大把.


这里有介绍它的文字:
“The Grey Catbird breeds in southern Canada and eastern and central USA but winters in southern USA, Central America and the West Indies. It is found in dense bushes and scrubby habitats.

A member of the Mockingbird family, it gets its name from the cat-like sound it makes. It is dark grey with a black cap and tail. The undertail coverts are chestnut。 ”
  • dawn256
  • 注册于:2004-12-31
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发表于: 5/21/2005 15:12 发表主题:
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而我要找的Warbler却总是高高地在树顶端遛达,或隐藏在茂密的树枝中,往往让人只闻其声,而未见其“鸟” ,却总是欲罢不能。

这是一只Yellow-rumped Warbler,也是我今年拍到的弟一只Warbler.

这一张可以看到小鸟侧身羽毛的颜色。


这里是一些介绍(www.birds.cornell.edu):
“Yellow-rumped warbler: One of our most abundant, widespread, and best-known warblers, the Yellow-rumped Warbler winters farther north than any other warbler. The winter diet of berries, especially the high-fat berries of the evergreen bayberry, enables Yellow-rumps to winter as far north as the Great Lakes in the East and Seattle in the West.
Yellow-rumped Warblers are relatively large warblers distinguished in all adult plumages by bright yellow rumps and white spots near the tips of the outer tail feathers. There is a marked seasonal change in plumage for both males and females.
Yellow-rumped Warblers form large flocks during migration and winter, especially in coastal areas where bayberries are abundant. Birds wintering in the interior feed upon cedar, poison ivy and other berries, and seeds. Yellow-rumped Warblers display a wider range of foraging strategies for hunting insects than most other warblers. They may often be seen sallying from treetops after flying insects or searching for insects on tree trunks in the manner of Brown Creepers; at other times they foliage-glean in the manner of other warblers. They may also be seen foraging on the ground.”
  • dawn256
  • 注册于:2004-12-31
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  • 所在地: Boston
发表于: 5/21/2005 15:16 发表主题:
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这是Wilson ‘s Warbler。这只小鸟跳到前面的枝头上,我只来得及停下,瞄准,按几下快门,它就飞走了。




这里是www.birds.cornell.edu的介绍:
“Wilson's Warblers are tiny (4 1/2" - 5") warblers with small bills and relatively long thin tails. With the exception of the males' shiny black cap, present to a variably lesser extent on the females, they lack obvious field marks. Forehead, face and underparts are lemon yellow, and upper parts are olive. The black eye stands out on the plain face.
The tiny Wilson's Warbler is an energetic bird that often makes a circular motion with its tail or wags it up and down. This tame and curious bird will usually approach at the sound of birders' spishing. Wilson's Warblers eat mainly insects (especially leafhoppers) and spiders, but they occasionally consume berries as well. “
  • dawn256
  • 注册于:2004-12-31
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发表于: 5/21/2005 15:34 发表主题:
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这是一只Black-and-white Warbler。看见它在高高的树枝间翻飞跳跃,我只有静静等在树下,瞅准时机,拍下几张。早见到它在树上吞食一些绿的东西,本以为是绿叶子,想想可能是个吃素的,回家一看,原来它吃的是绿虫子,在它们看来绝对是美味佳肴了。原来大多数Warbler都是吃昆虫为生的,看它们这么容易就找到虫子,应该是益鸟了。




这里是一些web上的介绍:
Distinctive in both plumage and behavior, the Black-and-white Warbler forages for insects while creeping along the trunks and branches of trees. Common in summer throughout the eastern United States and Canada, it has an unusually extensive winter range that extends from Florida to Venezuela and Colombia
This conspicuous warbler arrives in the North early in spring, usually by mid- to late April. It is known for its habit of creeping around tree trunks and along larger branches in search of insect food in crevices in or under the bark; hence its old name, "Black-and-white Creeper." Unlike the Brown Creeper, which only moves up a tree, this species can climb in any direction.
description 5" (13 cm). Black and white stripes, including crown. Male has black throat; female's throat white. Creeps on tree trunks.
  • shutterbug
  • 注册于:2004-09-20
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发表于: 5/21/2005 16:56 发表主题:
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welcome back, dawm 牛
Have you tried to use fill flash while shooting? You can get some catch light in the eye and some fill for the shadow of the birds' body.
  • Tyning
  • 注册于:2005-05-19
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发表于: 5/21/2005 21:07 发表主题:
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nice shots 牛
I guess for bird shooting one may need a focusing lens flash kit if want to use fill in flash, don't know how expensive it is, but the gear looks very cool.
How long focal length did you use for shooting these birds? I just have a Canon 75-300 IS dog head, very slow, but want to try if possible. Where is the best place? Mt. Auburn Cemetry?
  • dawn256
  • 注册于:2004-12-31
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  • 所在地: Boston
发表于: 5/22/2005 11:32 发表主题:
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shutterbug 写到:
welcome back, dawm 牛
Have you tried to use fill flash while shooting? You can get some catch light in the eye and some fill for the shadow of the birds' body.


Thanks.
The problem is that when I use the in-camera flash, the focus became extremely slow, so I give up using the flash. I have not tried with external flash, will it also slow down the focusing or is there an appropriate usage of flash that is not going to slow down the focusing?
  • dawn256
  • 注册于:2004-12-31
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  • 所在地: Boston
发表于: 5/22/2005 11:47 发表主题:
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Tyning 写到:
nice shots 牛
I guess for bird shooting one may need a focusing lens flash kit if want to use fill in flash, don't know how expensive it is, but the gear looks very cool.
How long focal length did you use for shooting these birds? I just have a Canon 75-300 IS dog head, very slow, but want to try if possible. Where is the best place? Mt. Auburn Cemetry?


What is a focusing lens flash kit? Can you describe more?
I am using the EF400mm/f5.6 + Kenko1.5x for these shots. I have seen somebody using the 75-300 IS lens getting good wild-life shots, although most of the reports about this lens is not good. You can check his gallery on the Pbase:
http://www.pbase.com/gangw
He has been using the 75-300 lens for a long time. I even asked him which lens he is using. Maybe recently he has upgraded to a 400 or 100-400 lens. He is taking terrific photos of wildlife!

As to where to go, here is a link about Brookline birding club, they have birding trip every week.
http://massbird.org/bbc/BBCTripsAprJun05.htm
Looking at their schedule for May, they go to Mt Auburn cemetery almost every week throughout May! I have not been with them to the birding trip yet, just occasionally checking their website. And I have not been to Mt Auburn Cemetery yet, just don't have time recently. Maybe it is still a good time to catch up the birds before the end of May. They also have trips to Plum Island and other places. You can check them out.
  • shutterbug
  • 注册于:2004-09-20
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发表于: 5/22/2005 23:49 发表主题:
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You have to use external flash. The internal flash is simply not powerful enough and the camera will hault while charging the flash. You may want to get a 580EX (check Dell's deal, you can get it around $330 after $20 canon rebate). It has faster recycle time than 550Ex. In Tv or Av mode, it won't slow down focusing and shooting. with my 20D, I can fire several shoot consecutively within a second, though only the first one or two shoots got the flash. in E-TTL mode, you can try the fill in flash around -1EV to 0EV. I don't see any flash effect if below -1.0EV fill. Please share what's the best fill-in ratio


dawn256 写到:
shutterbug 写到:
welcome back, dawm 牛
Have you tried to use fill flash while shooting? You can get some catch light in the eye and some fill for the shadow of the birds' body.


Thanks.
The problem is that when I use the in-camera flash, the focus became extremely slow, so I give up using the flash. I have not tried with external flash, will it also slow down the focusing or is there an appropriate usage of flash that is not going to slow down the focusing?

  • dawn256
  • 注册于:2004-12-31
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  • 所在地: Boston
发表于: 5/23/2005 12:19 发表主题:
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shutterbug 写到:
You have to use external flash. The internal flash is simply not powerful enough and the camera will hault while charging the flash. You may want to get a 580EX (check Dell's deal, you can get it around $330 after $20 canon rebate). It has faster recycle time than 550Ex. In Tv or Av mode, it won't slow down focusing and shooting. with my 20D, I can fire several shoot consecutively within a second, though only the first one or two shoots got the flash. in E-TTL mode, you can try the fill in flash around -1EV to 0EV. I don't see any flash effect if below -1.0EV fill. Please share what's the best fill-in ratio



Thanks.
8)
  • Annie
  • 注册于:2004-09-20
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发表于: 5/23/2005 13:13 发表主题:
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牛 牛 牛
I remember seeing one Wilson's Wabler last year in the Fens.
It was very bright in color and flying around very high up in the trees. I never got such a close look until I see your photos. Big thanks for sharing! rose
  • fos
  • 注册于:2004-10-20
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发表于: 5/23/2005 17:20 发表主题:
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dawn256 写到:
而我要找的Warbler却总是高高地在树顶端遛达,或隐藏在茂密的树枝中,往往让人只闻其声,而未见其“鸟” ,却总是欲罢不能。

这是一只Yellow-rumped Warbler,也是我今年拍到的弟一只Warbler.


精彩,除了Grey Catbird外,都是些少见的小鸟。好象最近一到周末就是雨天,没怎么出门,也就偶尔几次看到过Robin。


  • dawn256
  • 注册于:2004-12-31
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发表于: 5/23/2005 18:36 发表主题:
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这是一个Common Yellowthroat,也是Warbler的一种,乍一看,跟咱们国宝挺相像的。
另一个侧面像:


看看birds.cornell.edu的介绍:

Common Yellowthroat: “Upperparts of both sexes are olive gray to olive brown. The throat, breast, and undertail coverts are bright yellow in males, and paler in females. The belly is whitish. The exact extent of the yellow and white of the underparts varies geographically. Males have a broad black mask across the forehead, enveloping the eyes. The band of whitish gray above the masks varies geographically and is yellowish in some races. Females lack the mask and have a faint buffy eye ring.

The male Common Yellowthroat has a black mask that varies in size depending on the individual. A recent study showed that males with large black masks were more likely to win mates than males with small black masks. Males with larger masks were also more likely to sire young by copulating with other females, in addition to their own mate (Animal Behaviour 62: 435-446).”

这么看,我拍到的是个male。

“Male Common Yellowthroats perform song flight displays, especially during the late afternoon. The male gradually ascends into the air, calling to a height of 20 feet or higher, whereupon he utters a number of short sputtering notes, followed by song. He then drops back to the ground.”

不知道male common yellowthroat还能做这样的空中花样杂技。

“The female constructs a nest usually on or very close to the ground at the base of a shrub or clump of grasses. Sometimes she suspends the nest over water, attaching the nest to the stems of grasses, reeds or cattails. Occasionally, she extends loose material from the rim into an overhanging. The female incubates the eggs for about 12 days. Young yellowthroats leave the nest just eight days after hatching. They fly a few days later. Both parents tend to the young for an extended period up to 20 days. When a pair attempts to raise a second brood, as is common, the male sometimes assumes care of the first brood. Common Yellowthroats are frequent cowbird hosts. If a cowbird lays an egg in a yellowthroat’s nest, the yellowthroat sometimes builds a second nest on top of the parasite's egg and lays a new clutch. ”
  • Tyning
  • 注册于:2005-05-19
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发表于: 5/23/2005 19:28 发表主题:
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就是在闪光灯前面有个支架,上面装一面透镜,能汇聚闪光到很远的地方,很多专业大鸟选手都有装备smile


dawn256 写到:
Tyning 写到:
nice shots 牛
I guess for bird shooting one may need a focusing lens flash kit if want to use fill in flash, don't know how expensive it is, but the gear looks very cool.
How long focal length did you use for shooting these birds? I just have a Canon 75-300 IS dog head, very slow, but want to try if possible. Where is the best place? Mt. Auburn Cemetry?


What is a focusing lens flash kit? Can you describe more?
I am using the EF400mm/f5.6 + Kenko1.5x for these shots. I have seen somebody using the 75-300 IS lens getting good wild-life shots, although most of the reports about this lens is not good. You can check his gallery on the Pbase:
http://www.pbase.com/gangw
He has been using the 75-300 lens for a long time. I even asked him which lens he is using. Maybe recently he has upgraded to a 400 or 100-400 lens. He is taking terrific photos of wildlife!

As to where to go, here is a link about Brookline birding club, they have birding trip every week.
http://massbird.org/bbc/BBCTripsAprJun05.htm
Looking at their schedule for May, they go to Mt Auburn cemetery almost every week throughout May! I have not been with them to the birding trip yet, just occasionally checking their website. And I have not been to Mt Auburn Cemetery yet, just don't have time recently. Maybe it is still a good time to catch up the birds before the end of May. They also have trips to Plum Island and other places. You can check them out.

  • 天天
  • 注册于:2005-05-13
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  • 所在地: Cambridge
发表于: 5/23/2005 20:30 发表主题:
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牛 牛 nice shots! 又补了一节自然课!thx!
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