i have a pullett who is about 7 months old and she still is keeping me waiting on the eggs. she(bonnie) is part barred rock and part silver lakenvelder (spelling?) and in great health as is her roo. i also have a nh red and a bo who lay every day even in the cold. is this normal? should i do anything more than just waite? i'm impatient why is she leaving me hangin?