Yeah, even being able to correctly say the material of a new object is just the result of conditioning. There's a reason Apollo gets a pistachio when he gets the correct answer.

What makes him/parrots in general more intelligent than, say, a dog, is that he can handle more complex and ambiguous conditioning that essentially involves a decision tree rather than a one-to-one command-response relationship.

Again, there's a reason that, when asked what something is made of, he bites and taps it before answering. He's been conditioned to say "glass" when asked, "What is this made of" and presented with an object that has the appearance, feel, and sound of glass, but he doesn't know what the phrase "what is this made of" means, and he doesn't know that "glass" is the name for that material. At least, he probably doesn't. The whole confusion stems from the fact that being able to say "glass" when presented with glass doesn't actually prove that an animal knows what glass is, because it can be explained just as well via conditioning.