A bird beak is the most important resource it has, and every species has one solely designed for survival. Birds use beaks ...

When birds feed on nectar from flowers, they do more than just get a meal—they play a crucial role in pollination, ...

Under these drastically changing conditions, the struggle to survive favored the larger birds with deep, strong beaks for opening the hard seeds. Smaller finches with less-powerful beaks perished.

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