Tiny saggy egg?? Soft fart egg

[Chickenwithnobrim]

My silkie laid this freaky lil thing can anybody tell me what it is please, does she need to see a vet? The dimples are where I poked it when I first went to pick it up. Is it a fart egg combined with a soft shelled egg?

 

[Silviaschicks]

How old is your silkie? How long has she been laying? What are you feeding your girls?

 

[Chickenwithnobrim]

How old is your silkie? How long has she been laying? What are you feeding your girls?

I got her from somebody this April, who said she was a year or two old. She's been laying nearly everyday since her moult in April - may. This afternoon I switched to a more local 17% layer feed. (the other stuff was giving my other girl farting poops??) This new feed also has more calcium. I think it went from 3% calcium to 4.20%. I try to give her oyster shell but she turns her beak up or kicks it around