not sure if it is finished or ready, but it might be a good idea to implement some way for animations to play depending on motion at the time of death.

But right now a collision is only detected once for a pair. I imagine this idea would require to do two.  I did a quick attempt for ellipse. It wasn't going in the right direction so I dropped it. Thinking about it I think I can explain why it's a bad idea : ellipses are too good to tile up a given space regardless of if the shapes are aligned or not, creating interlocking patterns. A drawing not at all accurate but to give the idea : For the same area, the ellipses can compress easier regardless of orientation. Whereas the rectangles force a spacing. And there corner impacts actually helps keep it that way.   Really? Where can I get it? 

if you have a handle on if a unit dies while experiencing force (ie elephant strike or siege weapon), I wonder if one of @Alexandermb's new infantry death animations could be used. There is one where the unit gets knocked backwards off its feet, could be very cinematic.

I don't know if it's already been posted, but you can listen to the audio  in English. The platform here doesn't offer that option. https://vt.tiktok.com/ZSbfNLmvn/ I uploaded a small part of the video to TikTok.

By the way, I think this one is in the mod but only with green feathers from the wings to the wings; there is another version of this bird with yellow plumage. https://en.wikipedia.org/wiki/Scarlet_macaw   I don't know if @Lopess can confirm.