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[Hong Kong] A New Bird Killer - Noise Barrier 新雀鳥殺手 - 隔音屏障

路政署維修後的部份隔音屏障

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Good News!
希望可以減少到那處的鳥撞吧!
alan麻煩你繼續跟進啊!
就算巡視中沒有發現雀鳥撞屏障受傷的情況也要記下來啊!
因為這代表屏障的改變是有效的!
希望會有好的成效吧!


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hyd had add more stricker on the noise barrier
路政署加了更多貼紙了

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12-5-2010
斑文鳥
scaly-breasted munia

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Quote:
Original posted by lalan at 13/05/2010 00:04
12-5-2010
斑文鳥
scaly-breasted munia
想請問發現位置是在有橫線的屏障前,還是沒有加橫線的屏障前呢?
同埋跟對上一次發現死雀,相隔了多久?
期間是否有進行巡視而沒有發現死雀呢?
如是,次數又是多少呢?
謝謝分享!

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是死左有2塊貼紙的屏障前。
有發現就會有紀錄,無紀錄等於無發現。

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謝謝分享啊!

兩塊貼紙是否等於有2塊猛禽貼紙在同一塊屏障?

睇返之前的記錄,死雀的頻率似乎得到改善?

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10/7/2010
紅耳鵯

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11/7/2010
樹麻雀

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點解突然呢兩日又會多返既?
呢兩日發現鳥屍的兩個位置接近的嗎?

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我懷疑同附近結果的細葉榕有關

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12/7/2010
相思

好少連續3天都有紀錄,而且發現位置差不多

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17/7/2010
相思

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Quote:
Original posted by lalan at 17/07/2010 22:14
17/7/2010
相思
這隻也在鄰近位置嗎?

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這次不是了

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2010-09-24
unkown (may be Tree Sparrow)
不知名(可能是麻雀)

2010-10-4
珠頸斑鳩        Spotted Dove

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2010/10/12
Spotted Dove
珠頸斑鳩

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2010-11-03
unknow robin?

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又來? 想請問這次的位置的屏障有沒有加橫線的呢?

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16 Jan 2011
車公廟路發現一隻懷疑撞死的白頭鵯




位置


該處隔音屏障沒有任何貼紙等等措施, 鄰近公園

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An opinion - Send a letter of concern to Highways Dept. They should have experience to handle it.

By law (EIAO), all new transparent noise barriers should have bird collision prevention measures.

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現場附近環境,因為屏障下的灌木叢,很難發現屍體, 可能已有不少雀鳥遇害: (是次案發現場是巴士站旁,沒有植物)

透明屏障並沒有任何防鳥撞措施

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Quote:
Original posted by Beetle at 17/01/2011 11:28
16 Jan 2011
車公廟路發現一隻懷疑撞死的白頭鵯


R.I.P.

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詳情地址新界錦田東匯路近錦上路至錦甫路一段
    
  日期16/2/2011
    
  雀鳥品種紅耳鵯
    
  懷疑撞擊物隔音屏障
    
  撞擊物面積      6 m X  300   m
    
  撞擊物座向東南/西北
    
  撞擊物狀態  全透明
    
  雀鳥距離撞擊處30cm
    
  撞擊處附近環境行人路
    
  受傷/死亡死亡
    
  備註圖1及圖2: 現場環境
圖3: 雀鳥死狀
圖4: 地圖位置

  


[ Last edited by blackdogto at 17/02/2011 23:12 ]

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Just for refernece! Noise Barrier at Tseung Kwan O Road.

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18-10-2011
元朗十八鄉路
白腰文鳥

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18-11-2011
元朗十八鄉路
褐柳鶯

[ Last edited by lalan at 19/11/2011 22:21 ]

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It looks like that the situation at the end of 2011 still needs to improve.

I have sent a letter asking the Highway Dept. to consider more methods to stop such incidents.

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2012/6/9
十八鄉路 噪鵑

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Quote:
Original posted by louislee at 16/01/2012 13:48
It looks like that the situation at the end of 2011 still needs to improve.

I have sent a letter asking the Highway Dept. to consider more methods to stop such incidents.
Louis! Thanks for your concern and support!

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The distance in-between each sticker is too wide.... It should be not less than 1 m.

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19/06/2012
十八鄉路
珠頸斑鳩

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2012/8/9        Eurasian Tree Sparrow       
2012/8/17        scaly-breasted munia

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This issue of appropriate noise barriers to minimise bird mortality is something I've been looking at recently. Barriers are problematic if they are a) transparent and appear to allow a clear route through to habitat on the other side; or b) are reflective of nearby habitats causing birds to mistake the glass surface for the real thing.

A particular difficulty for birds arises from the fact that they are unable to fly slowly. If a bird does that, just like an aircraft, it will stall and drop out of the sky. For this reason birds are no good at braking mid-air. Their instincts prevent them doing this, due to the danger of falling out of the sky. Consequently, if, as a bird approaches a barrier, it notices that what previously appeared to be a clear passage through to suitable habitat is actually a glass surface, it cannot stop. So, unless there is sufficient distance to avoid a barrier by flying over or around it, collision is inevitable. For those who subscribe to Ibis, there is an interesting paper on this topic:

Martin, G.R. 2011. Understanding bird collisionswith man-made objects: a sensory ecology approach. Ibis 153: 239-254

Consequently, surfaces that appear to be solid only at close range (for example, where a pattern such as hatching is not visible at longer range) may still cause significant mortality. I have noticed this hatched pattern on noise barriers along the Tolo Highway near Tai Po, where it is being upgraded. Fortunately, the area generally is so highly urbanised, it is unlikely to be a serious issue.

The second issue is that birds have evolved to fly through trees at speed. As a result, falcon silhouettes or other similar measures do not reduce mortality by a statistically significant level (Klem, D. 1990. Collisions between birds andwindows: mortality and prevention. JournalField Orn. 61(1): 120-128). Such objects have to be placed densely across the surface so as to break the glass into clear areas of less than either 4” vertically or 2” horizontally. Such a density may be OK for roadside noise barriers, but probably not for buildings. The effectiveness of such things would appear to come from their ensuring that a bird knows there is a solid surface, rather than any sense of fear posed by the silhouette of a falcon (which may not be an issue for certain species). Threats are only perceived as threats if they are backed up by action, so to speak.

There is plenty of information on the dangers posed by urban environments to birds in the following:

San Francisco PlanningDept. 2011. Standards for Bird-SafeBuildings. San Francisco Planning Dept., San Francisco

which can be downloaded at:

http://www.sf-planning.org/ftp/files/publications_reports/bird_safe_bldgs/Standards_for_Bird-Safe_Buildings_8-11-11.pdf

GeoffC

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3-10-2012
白頭鵯

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11-11-2012
黃眉柳鶯

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16-04-2013 十八鄉路  極北柳鶯

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睇著一隻又一隻的雀仔死左,真是無奈。

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十八鄉路  
8/10/2013
北灰鶲
22/10/2013
黑瞼噪鶥

[ Last edited by lalan at 23/10/2013 23:20 ]

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Did these recent bird-kills happen at the same noise barrier which Highways Department has added eagle stickers and horizontal opaque stripes as shown in your photos posted earlier?

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Most of them found on the 十八鄉路, Yuen Long
yes, even the High way dept. add the sticker, it still happened.

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Looks like the standard provisions now in force for avoiding bird collisions with noise barriers are not effective.  The eagle stickers cannot scare away the brids, and the horizontal opaque stripes are too thin to be recognizable from a distance and also the spacing between adjacent stripes may even cause illusion to birds that they can fly through the 'gap' between stripes.  Tinting may be effective but the normal tinting used for noise barrier panels are blue, green or yellow which are all basic colours of the nature and therefore may not send a strong enough signal to the flying birds that there is man-made obstruction ahead.
If Government is not providing an effective solution, can HKBWS take the lead and form a task force to explore and identify effective means for incorporation into noise barrier designs to avoid bird-kills?
Once proven effective means are found, I am sure EPD and HyD would be glad to update their Guidelines on Design of Noise Barriers accordingly.

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this was found this morning at 53 Cornwall Street .. i was told by my friend that they often find dead birds in the morning, ..

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13/10/2014 20:59

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Wilson Dring
https://www.facebook.com/wilsondringphotography/

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3 December 2014
The deadly trap, a noise barrier, was erected between Tsuen Wan MTR depot (U-turn track) and Discovery Park, Mei Wan Road.





[ Last edited by cwchan at 4/12/2014 20:04 ]

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There is no more new posting of dead birds found near noise barriers for almost a year now.  Does this mean that the problem has been resolved now?
It seems that Chinese Univeristy of Hong Kong used a pattern of circular dots on noise barrier surface and found that the pattern can deter birds from collision.  Is this correct and anyone has photo of the noise barrier with dotted pattern for sharing with us?

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單以十八鄉來說,撞死的鳥類好像少了,
原因可以是附近已漸漸城市化,也因為少了在附近活動,所以紀錄不了。
但不時都有新聞或朋友消息聽到類似消息,不只於隔音屏障,可以是窗戶或膠片,汽車,甚至電線等
收集這些散亂的資訊是十分困難,唯有靠眾鳥友報告。
謝謝~

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