little bird

[Leapers]

On my walk home today, past a river, there was a little bird on the wall (little sparrow type thing) and obviously walking near it, it flew away and landed on a metal fence with the square gaps and trying to fly through it got stuck because it wasn't putting its wings down enough, not because it was too big or anything, i was with my friend who thought she would try to help and then it fell through the fence and then preceded to fly into a blacked out window of the police station thats next to the river behind the fence!

I know the bird obviously panicked while stuck in the fence but it seemed like a really stupid thing to do A) to first get stuck in the fence then B) to fly into the window

Could there have been a problem with this bird like a parasite affecting it or something to cause such odd un-bird-like behaviour as usually they are so graceful?
Thanks for any insight!

[wildwood]

There was most likely something wrong with the bird as they are very adept at avoiding getting stuck, their reaction is a lot faster than ours. A sparrow can easily fly through a 4" gap in a fence by temporarily closing its wings in midair.

Maybe it was getting old or felt sick.