These are identical to mine which are Isa Browns (a mixed breed I believe).. I do however have two very weird chooks that a will try to get everyone to identify on a different thread
I have same problem with one of my three girls.....here in Australia Vitamen D should not be my issue due to long days of sunshine..I have wormed them regularly..they have been laying for about three months but one has laid about one softie each couple of weeks the other days they are firm but...