sick birdy

[Autumn D]

my chicken topaz is having trouble passing droopings and what does come out is yellowy green liquid. her crop is hard and bloated a bit. she is clucking in pain. what is it?

 

[Autumn D]

there also is no nasal discharge or watery eyes, infact she looks fine if you were just to look at her, other then her bloated crop, what can i do to cure her, were really getting low on layers