It's an endurance-type where the 2 players alternate, they currently still have 2 balls in play but statistically should lose one ball soon...
https://www.youtube.com/watch?v=LNdo6wu_Xug
https://www.youtube.com/watch?v=LNdo6wu_Xug
I think that's the point... (hint: balls = eggs )That link takes us to an eagles' nest cam.