UPDATE #2:
A day after, the same bird is in front the window again!
I called the animal control center again and they gave me a phone # to a different center.
I called them up and they told me to capture the bird by myself!
I tried but he ran. He hid under a car which is parked on the side of road. Being afraid that he might run off to the road, I backed off and started walking toward home. That's when I heard my girlfriend scream. I looked back and the bird was in the middle of the road laying down while cars are going over him. I knew he was hit but wasn't sure how bad the situation was. He didn't look flat; that's good, I thought.
My girlfriend stopped the traffic by running toward cars. At that time, I was afraid both of the bird and my girlfriend would get hit. Luckly, the traffic stopped and we were able to pick him up. We came back home put the bird in a box, called the center, and explained the situation. After that, I examined the bird and it looks perfectly fine except his far right toe; I see a tiny bit of blood and it looks like one toenail is kind of fallen off. That's damn good considering how he was in the middle of the road not to mention all those cars that went over him.
Now, is there anything I can do for this bird? Should I just keep him in a box like I was told or should I try to feed him something?