Birds feed on nuts and berries in the winter.

鸟类靠坚果和浆果过冬。

《牛津词典》

Birds feed on worms. A bird will go hungry if it cannot catch worms. The bird that gets up early is sure to get some food, so the early bird catches the worm.

鸟以虫为食。鸟捉不到虫就会饿。早起的鸟儿定能得到食物，因此早起的鸟儿有虫吃。

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For instance, several kinds of birds feed on insects flushed out of the grass by grazing cattle.

例如，几种鸟类以被放牧牛驱赶的昆虫为食。

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Crofters on Skye and in Wester Ross have claimed the birds feed on their stock.

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While it doesn't affect birds that feed at sea, which is the vast majority of birds around the island, it could harm those that feed on land, such as ducks, gulls and skuas.

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He already receives EU money in exchange for leaving areas fallow for nesting birds, as well as weedy, grassy verges to encourage insect life for the birds to feed on.

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