Chicken Invaders

Some aliens attacked the intergalactic space. It's coming to your planet Zorbium. Nothing like you or your people have seen before. It looks odd. It can fly and it has a strange kind of fur. It reminds albatrosses the creatures, that live with you at Zorbium. Anyway, it is necessary to immediately board on a combat ship and destroy the intruders of the intergalactic space. Meanwhile, a group of Earth scientists have discovered a new galaxy. It looks like the values around resemble that on Earth, which is very weird! There had to be an error in the calculations. Well, what if not? Chickens serve as discoverers! Let them out of all ... all 15,000. How this ends for Zorbium people? Get rid of all the chickens! Have fun.