Concerned "Mother Hen"
We have 4 pullets (1 BO, 1 Barred Rock, 1 RIR, and 1 Americauna/Aracauna); 3 started laying at 17 weeks and the 1 at 18 or 19 weeks (she's the Easter Egger). She recently stopped laying eggs about 10 days ago. She is the only one of the four who is not laying, we have made no changes to diet or housing, and there have been no stresses to their environment (that I am aware of). I have checked her vent and it looks "normal" compared to the other 3 chickens. It's too early for them to start molting, and we have had a decrease in daylight hours, but wouldn't that effect production in all 4 chickens?
Do I need to take her to a vet? Any suggestions are appreciated! Thanks!