卡皮斯特拉诺布道所的红石燕(2/3)
概述：人们做了很多尝试来吸引红石燕，但似乎都是徒劳。政府决定向专家求助。
Hints:
Pat March
Mission San Juan Capistrano
Charles Brown
ornithologist
University of Tulsa
Oklahoma
校对：forever秋懵
翻译：毅力啊
注解：毅力啊
组长：ldzh43
答疑：994116450ahttp://t1.g.hjfile.cn/listen/201206/201206140657497679708.mp3Pat March is a volunteer at Mission San Juan Capistrano. She says there have been many attempts to get the birds to return, including setting out food.
"What they would do is they would put out ladybugs to attract the swallows."
Employees also dug shallow holes in the ground around the mission and added water to make mud. The birds make their nests from wet earth.
Workers also placed man-made nests under the roof line of mission buildings. None of the attempts worked. So officials decided it was time to seek professional help. Enter scientist Charles Brown.
"I've been studying cliff swallows for about 30 years."
Mr. Brown is an ornithologist from the University of Tulsa in Oklahoma. He says 40 years of development around San Juan Capistrano has led to a 50% reduction of the swallow population in southern California.
"That is the one part of North America where the numbers have been going down."帕特·玛驰是一名在圣胡安·皮卡斯特诺拉布道所工作的志愿者。她说为了让红石燕飞回这里，他们尝试了多种方法，其中包括散发食物。
他们接下来要采用的方法是用瓢虫来吸引燕子。
员工们也在布道所周围的地上挖洞并加水制造泥浆，因为燕子喜欢用湿润的土筑巢。
工人们还在布道所建筑物的屋檐线下放置了人工鸟巢。但这些办法无一奏效。政府认为是时候向专家寻求帮助了，于是科学家查尔斯·布朗登场了。
“我研究红石燕已近30年了。”
布朗先生是来自美国俄克拉荷马州塔尔萨大学的鸟类学家。他认为圣胡安·卡皮斯特拉诺周边区域40年来的发展已导致在加州南部的红石燕数量减少了一半。
“红石燕的数量在北美洲的那一部分地区持续下降。”
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