[ollies mom]

We have had girls since approx 4 to 6 weeks about 18 to 20 now how often should I worm them.

[chickenlady]

some say spring and autumn, others say only if risk is high or signs of worms present. I am going to do mine spring and autumn as they live under trees that have other birds in and dont want them to get any nasties.

[Aunt Sally]

Good advice chicken lady

Do read this article mom.  It should contain most of what you need to know