I need help

I just saw Pigeon tht look someone hurt it or fell in ground or someone ran over
The Pigeon wings are broken and the Pigeon can't walk nor defend itself
And I don't how to help is it sin to walk away from it
I can call the Animal Rescue Center but I don't have a balance phone is and my money is at home
Is it wrong to walk way and do nothing and does Allah hold me responsibility for it
 
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