Rüppell’s vultures have an impressively extensive vocal repertoire, which might be driven by the highly social behavior of this critically endangered species

Researchers found that turkey vultures flying at higher altitudes are generally flying 1m/s faster than those at lower elevations due to reduced drag. By flying faster, these birds can compensate for the lack of lift caused by thin air, allowing them to remain aloft in challenging conditions.

Researchers discovered lemurs possess an additional pair of vocal folds, which they believe is responsible for enriching their vocal repertoire and allowing them to exaggerate their size. This adaptation may have provided a selective advantage in competition for territory or mates.

Researchers have discovered specialized neural circuits in the brains of seals and sea lions that enable complex vocal behavior and learning. These circuits, including strong bilateral connections between the vocal motor cortex and brainstem nucleus ambiguus, are found in species with varying capacities for vocal flexibility and learning.

Research by Max Planck Institute of Animal Behavior found that individual monk parakeets living in larger groups produce more variable repertoire of sounds. Female parakeets also have a more diverse repertoire than males, suggesting they are the more social sex.

Researchers study vocal fry and find low pitch is the key marker for creaky voice, contradicting popular belief that it's a hallmark of young women's speech. The study reveals social biases, not biological differences, are driving the perception of vocal fry.

As griffon vultures age, they tend to establish fewer but stronger social bonds with a core group of friends, while their movement routines become more routine. This shift in behavior is linked to the birds' increasing loyalty to familiar food sources and roosting sites.