Wild birds have caught the canary pox virus, and penguins have been stricken by avian malaria.

野生鸟类感染了金丝雀痘病毒，企鹅也感染了禽疟。

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The effects of warming on avian malaria were not universal.

气候变暖对禽虐的影响并不普遍。

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However, a new analysis of the spread of avian malaria shows that for the birds, at least, there is a real worry.

然而，一项针对禽疟扩散的新的分析显示，至少对于禽类来说，确实应该担忧。

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Some of the threats included grazing animals, which destroyed the birds' habitat, and mosquitoes that carried avian malaria.

BBC: Birds at risk reach record high

However, a new analysis of the spread of avian malaria shows that for the birds, at least, there is a real worry.

ECONOMIST: Malaria among birds is becoming more prevalent

The blackcap (Sylvia atricapilla), a migrant bird common in Europe that breeds in gardens, once had virtually no avian malaria but a study in 1999 showed nearly 4% had the disease.

ECONOMIST: Malaria among birds is becoming more prevalent