Huh! I'm not sure how we didn't catch this in testing, but it seems like alolan crow tower dying while its laser was active would cause a scenario where, because the laser refers back to its parent object during its destructor function but the parent object more or less already doesn't exist, it accessed undefined memory and crashed the game. Thanks for bringing it to our attention! We've put up a hotfix for it c:

There is actually a description of what all the birds do on the second page of the how-to-play section! However, i suppose it's not exactly obvious that you'll be able to pull this up if you hit the pause time button. But I'm glad that you enjoyed our game anyway c:

while it would take a lot to add tooltips as things stand, the new version 1.1c does address the sound breaking issue you experienced on your stream, and greatly smooths the transitions between the song modes c:

i think there could definitely be room for better ways to display some of the info at hand, and a theoretical later version to increase scope will certainly add some things based on the feedback we've gotten. We both wanted this project to push us outside our comfort zones, and in this case it's Lily's first time making mouse-driven gameplay work, so it's a bit unrefined. However, in a version released after you played, we did expand the relevant notes in the How to Play to cover placement and hatching controls, and you're now prevented from beginning the first wave if you haven't hatched an egg, so confusion should be at least partially mitigated c: