Attracting numbers of birds continually to the same spot can be harmful to them, particularly species that pick food from the ground contaminated by the droppings of other birds.
持续吸引大量的鸟类到同一地点对它们来说是有害的，尤其是那些在被其他鸟类粪便污染的土地上觅食的鸟类。
As infected birds shed large quantities of the virus in their faeces, opportunities for exposure to infected droppings or to environments contaminated by the virus are abundant under such conditions.
由于受染鸟类在其粪便中排泄大量病毒，在这种情况下接触受染粪便或病毒所污染环境的机会很多。
The stage has aged less gracefully; it is flanked by torn Burgundy curtains covered in droppings from birds that roosted inside until a broken skylight was sealed.
老舞台由于岁月的蹉跎已不再典雅；侧面的巨大勃艮第窗帘被鸟儿扯了下来搭成了鸟巢，留下一个大大的窟窿。
These viruses couldn't replicate and spread to other chickens through the birds' exhalations and droppings.
病毒不能自我复制，也就不会通过呼吸和排泄物传染给其它禽类。
Large amounts of the virus are known to be excreted in the droppings from infected birds.
已知在受染候鸟的粪便中分泌出大量病毒。
As far as bird droppings go, they are part of having birds in your yard and your thistle bird feeder guarantees you'll see droppings.
据鸟类粪便走，它们是你的院子有鸟鸟和你们蓟馈线保证您看粪便。
Large amounts of virus are known to be excreted in the droppings from infected birds.
在感染的禽类排泄物中有大量的病毒。
Summer, many birds in the trees on the school built a nest, creating a lot of bird droppings.
夏天的时候许多鸟儿在学校的大树上筑了巢，制造了许多鸟粪。
Some are eaten by birds and scattered in their droppings.
有些被鸟儿吃掉，散落在它们的粪便里。
While touring the park, visitors should avoid contact with wild birds, their droppings and feathers.
参观湿地公园期间，请不要接触野鸟、其排泄物及羽毛。
Liverpool, plagued by pigeons that pollute the city center with their droppings, is introducing a mechanical falcon which squawks and flaps its wings in hopes of scaring the pesky birds away.
市中心长期遭鸽粪污染的利物浦市，最近引进一种能够发出嘎嘎叫声，还能拍动翅膀的机械鹰，希望能把麻烦的鸽群吓跑。
Liverpool, plagued by pigeons that pollute the city center with their droppings, is introducing a mechanical falcon which squawks and flaps its wings in hopes of scaring the pesky birds away.
市中心长期遭鸽粪污染的利物浦市，最近引进一种能够发出嘎嘎叫声，还能拍动翅膀的机械鹰，希望能把麻烦的鸽群吓跑。
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