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。

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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。

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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。

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The pigeon houses riddling the rock faces, traditionally used to collect the birds' droppings for use as fertiliser, mostly stand empty.

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Hui said the pigeons were probably infected by wild or migratory birds, whose droppings can carry viruses.

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Mark's Square in Venice, Italy, where the birds often bestow droppings.

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