What does the study of domesticated birds tell us about the evolution of human language?

What does the study of domesticated birds tell us about the evolution of human language?

Perseverance got us to Mars. With Ingenuity, we soar higher. The #MarsHelicopter made history today by being the first craft to achieve controlled, powered flight on a planet beyond Earth.

The US Just Reached an Incredible COVID-19 Vaccination Milestone