i got 3 chickens from one lady.she has maybe hundred.i choose them myself and they live in my coop for 3 weeks.
she told me theyre year old.. two of them had extremely long curled nails..so i had to trim them
one chicken gave me egg the day i transported them. one black never gave eggs(i think americauna) and isa brown gave me 6 rubber eggs only. so in 3 weeks i got 6 rubber egs from isa brown. my others chickens(got at craigslist week ago) give me pretty brown eggs everyday. they all eat same food- oyster shell always, egg layer mix and food scraps(i also let them roam around so they eat insects and greens),they have ash bath in coop area. i get rid of mites(these from old lady had mites on them)
so i cant say these 3 have stress and it reason of rubber egg.just one give me rubber and other 2 give zero.so i have 2 roosters now, 5 young chciks and 5 chciekns who re older then year.only two of them lay everyday.
each time this mean isa give me rubber egg,she destroyed and create smelly mess in nesting box.so i had to clean it
is she NOT able to give hard shell? she also meanest from my ten chicken so if you tellme to make soup from her(to my dogs)i llnot regret