Guys, listen. The sky is actually falling as we speak... This movie was actually a hint at what we should do when this did eventually happen... The orbs outside are signals of aliens warning us that the sky is actually falling. We gotta do something!! THE SKY IS FALLING AND WE'RE DOING NOTHING!!
The aliens were probs in direct contact with the people who made this movie, and the chicken signifies that the birds know... They've always known... the aliens are actually working with the chickens and receiving brain signals from the chickens which make the orbs outside, they're warning us... The sky is falling. I repeat, the sky is falling.