退休人士 Retirees

劉耀均、羅秀雯

退休人士 Retirees

Retirees
Interests: Barn Swallow

We are the “private investigators” of swallows.

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Cheung Chau residents Lawrance Lau and Lawman Law became members of the Hong Kong Bird Watching Society (HKBWS) twenty years ago. With Cheung Chau’s unique architecture of low-rise village houses and terraces, they have noticed a number of Barn Swallows nests in the neighbourhood. Curious, they turned their interest into conducting surveys on these swallows.

There is a difference between bird and swallow watching: “We don’t use binoculars or zoom lenses; we don’t take notebooks.” As Barn Swallows nest in residential homes, the pair have once been mistaken as government officials while observing them on a neighbour’s roof. They have quickly learnt to watch swallows like private investigators, bringing only a pen and a pad of post-it notes to document their observations. The couple continued this self-initiated investigation in Cheung Chau for 17 years, making findings that show the impact from man-made environmental factors, like mosquito controls, on the fluctuation of swallow nests on the island. Since then, they have also joined HKBWS’s Swallow Research Group, with Lawman as the Convenor for the group now. Sadly, recent research by the group shows a year-to-year decline of Barn Swallows in Hong Kong’s urban areas, due to the population density and constant man-made environmental threats.

退休人士
生態愛好 :家燕

我們是燕子「私家偵探」

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劉耀均(Lawrance)和羅秀雯(Lawman)夫婦家住長洲。20年前加入香港觀鳥會開始觀鳥。他們留意到長洲大部分民居都是設有露台的矮村屋,吸引不少家燕築巢,於是抱著好奇心開始做家燕調查。觀家燕與一般觀鳥不同,「我們不帶望遠鏡、不用長鏡頭、亦沒有考察筆記本」。原因是燕巢靠近民居,他們拿著望遠鏡觀察人家的簷篷、拍照,街坊會以為他們來偵查僭建。現在他們會像私家偵探般低調,輕裝上陣、不用望遠鏡不拍照,只在便條紙上簡單記錄。他們在長洲的自發調查持續了17年,發現燕巢數目時有增減,會受到像滅蚊工程等人為影響而減少。他們後來亦加入了觀鳥會的燕子研究組,現在Lawman是該組召集人。研究組調查顯示,市區燕子因要面對更多人為威脅,數目現正按年遞減。