one of my black copper marans cant walk!

[Spring Chook]

One of my Black Copper Marans hasnt been able to walk properly for the last 2 days. I have separated her from the others and inspected her legs but cant see anything wrong. SHe is about a year old, and has been eating layer pellets, scratch, scraps, and free ranges. She is stumbling about as though she were drunk. Pooing normally though, and eating ok. She laid an egg yesterday but nothing yet today. Any ideas

 

[Spring Chook]

i just checked on her again and her walking is a bit better but her breathing seems very laboured. Please advise!

 

[Paco]

Don't have advice but heres a bump

 

[Spring Chook]

thank you PAco
She seems a lot better today. SHe is walking without having to flap her wings to stay upright but is still rather unsteady. As she is eating and pooing fine, I'm thinking she hurt herself getting off the perch or something.