Feather mites help to remove bacteria and fungi from the feathers of birds, according to a new study. In fact, the relationship between these mites and their hosts could be considered mutualism, with ...

What makes a bird a bird? For starters, it has to be covered with a collection of branching, hair-like structures known as feathers. If you add a toothless beaked jaw, a four-chambered heart, a strong ...

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