I'm sure this has been asked before, so apologies in advance. I got four pullets (2 Araucanas, 1 Austrlorp, 1 Wyandotte) this past summer. The farmer told me they were born in April. Thus far (mid-November) only the Australorp is laying. I understand that sometimes Araucanas mature late, but isn't this going a bit long (particularly for the Wyandotte)? They have a clean, dry, and warm house and free-range much of the day--and I have looked in the tiny backyard for eggs; there are none. They also have a low level lamp on a timer that kicks on around 4:00am. Happier hens I have never seen; they just aren't laying! What gives?