META: Finding Friends

Despite all the puzzles you've solved on your search around Dilemma Planet, you can't seem to find any of Dippy's feathered friends… until you realize they've all been hiding in plain sight!

How can Dippy send them a message?

This is a metapuzzle. That means it uses all the previous answers from this round (but you'll need to figure out how). Often, the first step in solving a metapuzzle is figuring out some kind of hidden property that the answers have in common.

Although all answers are used, you can often guess the metapuzzle's answer once you figure out how the metapuzzle works and have most of the answers.