Advice needed for a bird with a broken wing

[ten chicks]

update: i made a sling for her of cloth and safety pins, goes under body and underneath her other wing. her legs and vent aren't unobstructed. but it makes her unsteady and now she can't walk right. also ... worried that she can't move the wing at all. i don't want it to get necrotic and cause infection. i'm close to taking her to the animal hospital but i know it'll be absurdly expensive. how worried should i be???

If she is having issues,or seems stressed about this,i would just remove wrap. She how she does without it. Wing will probably droop,but that is ok. If she is eating,drinking and pooping,i wouldn't be worried.