A long-standing theory that excessive conflict is bad for society has been demonstrated in an animal population.
Comprehensive study predicts how climate change could affect the ranges of 588 North American birds.
The parrots demonstrate they can learn how to make and use tools after seeing another bird at work.
Scientists have been puzzled by the fact that hummingbirds maintain such a sugary diet without a sweet-taste receptor.
Members of the smallest penguin species may even synchronize their movements during foraging trips.
Study reveals the key factor behind the transformation of theropods into high fliers.
Mother's nature's tiny fliers still tops in aerodynamic efficiency, but small man-made birds closing fast.
Birds' eggs show pigment and structural adaptations that let just the right amount of sun reach the embryos.
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