Regularly cleaning bird cages can help prevent the spread of the disease.

有规律的清洁鸟笼，有助于防止这种疾病的蔓延。

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Market wares: Qasim Moradi, 18, captured this image of bird cages hanging at a market stall.

市场上的商品：18岁的Qasim Moradi拍摄了这张照片，照片中，市场的摊贩前挂满了鸟笼。

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Things such as chairs, curtains, cooing pots, drinking cups, bird cages can all be made of bamboo.

类似椅子，窗帘，饭罐，水杯，鸟笼等东西都可以用竹制造。

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Old-style cages only had 550 square centimetres of space for each bird - which is less than a sheet of A4 paper.

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