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.
A newly discovered dinosaur species offers hints that feathers were much more common among the ancient beasts than once thought.
Some 322 birds, mammals and reptiles all went extinct in just the past 500 years due to people, research shows.
The Minnesota Vikings' glass-filled football stadium raises concerns over bird strikes. So why do birds fly into windows?
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