Extremely worried - My (feral) dove is limping

Hello everyone. Your precious advice helped me and saved my feral pigeon friends many times. Now I need you more than ever.

This afternoon my dear, precious Colombina (Streptopelia risoria) has started limping for NO apparent reason. She doesn’t have strings around her feet, no visible cuts, no swelling, no visible broken toes. She doesn’t stand up when eating and she limps when walking, using her wing as a stick. She can’t properly stay on perch-like surfaces, only flat surfaces.

Luckily, she flies as usual. She eats and drinks as well, and even sings.

She lives in the wild (I suppose she got lost after a wedding ceremony or a magician got rid of her) and engages in fights with wood pigeons everyday, even today I saw her doing it. I befriended her a few years ago and she comes to see me for a snack everyday.

I’m BEYOND worried and heartbroken. I can’t stop crying. She’s my best friend and I can’t stand the mere idea of her feeling ill/hurt. I’m willing to take her to the veterinary ASAP, but I need to know what she could possibly have, in your opinion, just to survive tonight. Maybe she hit something and now it hurts? Can it be temporary? What could it be?
I couldn’t catch her today, because she only came this afternoon and I was not ready for this.

I need a reassurement, I beg you. Thank you SO SO SO much in advance.
Much love from Claudia and Colombina

sorry about the bad quality of photos

Edit: additional pictures of the foot that seems to bother her, sorry again about the quality