[calibas]

> Is bird song language? What are they saying?

Depends on what you mean by language. If you mean "a structured system of communication", then it absolutely is. The only modern scientific rejection of birds songs as language is based around the definition of the word "language".

They're saying many different things such as "I'm ready to mate", "I'm hungry", "Stay away", "Come here", and "Predator nearby". Not only that, but birds are able to specify which kind of predator is nearby.

There's a resistance to these ideas that goes beyond objective science, and it's because we were previously basing our understandings on faulty assumptions. There's even a term for it, "human exceptionalism".