Chick chick and her 5 BFs

There's an elderly rehab centre near my workplace. Used to see 3 chickens roaming at the green patch on the centre divider and along the road in front of the block. But recently saw that Chick Chick has gotten herself 3 new bf!! hehe. And they have a new haunt! The junction opposite the block!

Managed to sneak a photo of them out playing this morning. Now my question is, how did the chickens cross the road??