I purchased a ISA Brown hen. They told me she turned a year old in April of this year. I have been feeding her Grubbly farms and she seems to have intergrated well with my little flock of 5. The only issue is i purchased her 2 months ago and she hasn’t laid a single egg.. I purchased a barred rock around the same time and she started laying the very next day we brought her and hasn’t stopped laying since. it’s June and very warm here with nice weather. Not sure if this is normal? How long should I wait? She seems healthy and normal. Picture attached. I checked for mites and nothing. Give them fresh water daily. They free range. All my others are laying.