I recently acquired two barnvelder hens, 1 black crested white polish (white black crested polish? how do you word it?), and 1 welsummer hen. I've had them for over a week and no one is laying!! I'm antsy to see their beautiful brown Barnevlder eggs....the man I got the hens from said he hadn't seen any eggs from them yet. They were hatched in mid-late March. Should I be seeing eggs soon?!?!