DAVID: Your question requires research into the particular econiche in which the weaver plays a role. Such research has answered the question like this, as I have shared before.

dhw: So what is your theory about other birds? Did they autonomously work out how to build their inferior, egg-endangering nests, or did your God give them instructions too? I can’t remember why the weaverbird’s econiche was of special significance in the evolution of the human brain, so perhaps you can remind me?

All econiches are important to the balance of nature, the importance of which you like to downplay.